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Metrics for Gerrit code review | Modern code reviews in open-source projects: which problems do they fix? | 140-GHz Planar Broadband LTCC SIW Slot Antenna Array | kor_Hang | 7,500 |
Proposal and Synthesis Design of Wideband Phase Shifters on Multimode Resonator | Broadband Phase Shifter Using Loaded Transmission Line | Design of Compact Directional Couplers for UWB Applications | eng_Latn | 7,501 |
Design of a Monopulse Antenna Using a Dual V-Type Linearly Tapered Slot Antenna (DVLTSA) | Guided-wave and leakage characteristics of substrate integrated waveguide | Dispersion characteristics of substrate integrated rectangular waveguide | eng_Latn | 7,502 |
Planar Compact Multi-Band C-Shape Monopole Antenna with Inverted L-Shape Parasitic Strip for WiMAX Applications | Novel CPW-Fed Planar Monopole Antenna for WiMAX/WLAN Applications | Efficient error detection in Double Error Correction BCH codes for memory applications | eng_Latn | 7,503 |
Microstrip planar array antenna with improved DGS structure for multiband operation | A design rule for inset-fed rectangular microstrip patch antenna | A Perspective Vision on Complex Residential Building Management Systems | eng_Latn | 7,504 |
Real-time data-driven interactive rough sketch inking | Closure-aware sketch simplification | A broadband end launched coaxial-to-waveguide transition for waveguide phased arrays | eng_Latn | 7,505 |
A Dual-Band U-Slot PIFA Antenna with Ground Slit for RFID Applications | Dual-band reduced size PIFA antenna with U-slot for Bluetooth and WLAN applications | A novel dual-frequency circularly polarized rectenna | eng_Latn | 7,506 |
Slab Air-Filled Substrate Integrated Waveguide | Air-Filled Substrate Integrated Waveguide for Low-Loss and High Power-Handling Millimeter-Wave Substrate Integrated Circuits | An n-ary Constraint for the Stable Marriage Problem | eng_Latn | 7,507 |
A Wideband Minkowski Fractal Dielectric Resonator Antenna | On the Dual-Band DRA-Slot Hybrid Antenna | Mobile-banking adoption by Iranian bank clients | deu_Latn | 7,508 |
A Dual-Band Dual-Sleeve Monopole Antenna | Wide-band dual sleeve antenna | Scale ratio ICP for 3D point clouds with different scales | ita_Latn | 7,509 |
62-fs pulse generation from a SESAM modelocked Yb:CALGO thin disk laser | Sub-100 fs pulses with 12.5-W from Yb:CALGO based oscillators | Sub-100 fs pulses with 12.5-W from Yb:CALGO based oscillators | eng_Latn | 7,510 |
Nonlinear emission characteristics of quantum dot–micropillar lasers in the presence of polarized optical feedback | High-β quantum dot-microlasers subject to time-delayed optical feedback | Negative feedback in ants: crowding results in less trail pheromone deposition | eng_Latn | 7,511 |
Autoignition Delay Time Measurements of Methane, Ethane, and Propane Pure Fuels and Methane-Based Fuel Blends | Ignition Delay Time and Laminar Flame Velocity for a Combined Laser–Microwave Ignition | A straightforward route to enantiopure 2-substituted-3,4-dehydro-β-proline via ring closing metathesis | eng_Latn | 7,512 |
Modeling of the electrically-tunable transistor-injected quantum cascade laser | Wavelength Tunability of the Transistor-Injected Quantum Cascade Laser | Completely Stale Transmitter Channel State Information is Still Very Useful | eng_Latn | 7,513 |
Scaling photonic packet switches to a large number of ports [invited] | Scalable optical packet switch for multiple data-rate packets using RF tone based in-band labeling | No evidence for apparent extent between parallels as the basis of the Poggendorff effect | eng_Latn | 7,514 |
Mg Doped p-Cladding AlInP Layer with Window-strucure High Power 660 nm(3.7 W) AlGaInP Broad Area Laser Diodes | TO packaged 650nm red semiconductor laser with transparent window | Aldosterone Is Not Associated With Metabolic and Microvascular Insulin Sensitivity in Abdominally Obese Men | eng_Latn | 7,515 |
Modelling bistability in injection-laser amplifiers using lumped-circuit models | Spectral Correlation Of Semiconductor Lasers | Completely Stale Transmitter Channel State Information is Still Very Useful | eng_Latn | 7,516 |
Experimental Demonstration of Superconducting Nanowire Single-Photon Detectors Integrated with Current Reservoirs | Timing properties of superconducting nanowire single-photon detectors | Timing properties of superconducting nanowire single-photon detectors | eng_Latn | 7,517 |
Quantum-to-classical transition via fuzzy measurements on high gain spontaneous parametric down-conversion | Spectral properties of high-gain parametric down-conversion | Spectral properties of high-gain parametric down-conversion | eng_Latn | 7,518 |
Generation of the Second Harmonic of Laser Radiation in Noncentrosymmetrical Polymeric Systems | Photochemical recording of an image with nonlinear optical properties in polymer layers | Dynamic assembly of end-joining complexes requires interaction between Ku70/80 and XRCC4 | eng_Latn | 7,519 |
Femtosecond dynamics in semiconductor lasers: Dark pulse formation | Dark pulse quantum dot diode laser. | 101 Flux Decline in Ultrafiltration Processes | eng_Latn | 7,520 |
Optical clock recovery using the periodic oscillations (also known as Ikeda oscillations) that arise from the astable behavior of a Ti:LiNbO/sub 3/ Mach-Zehnder modulator with delayed feedback at a frequency of 13.6 MHz is discussed. The jitter performance of the timing extraction scheme for several input patterns is presented. The circuit provides gain, and its speed can be improved by monolithic integration of the modulator and the feedback-loop components. > | The dynamics of coherent clock recovery (CR) using self-pulsing two-section distributed feedback (TS-DFB) lasers have been investigated. Both simulation and experimental results indicate fast lockup and walk-off of the clock-recovery process on the order of nanoseconds. Phase stability of the recovered clock from a pseudorandom bit sequence (PRBS) signal can be achieved by limiting the detuning between the frequency of free-running self-pulsation and the input bit rate. The simulation results show that all-optical clock recovery using TS-DFB lasers can maintain a better than 5% clock phase stability for large variations in power, bit rate, and optical carrier frequency of the input data and therefore is suitable for applications in optical packet switching. | We prove that groups acting geometrically on delta-quasiconvex spaces contain no essential Baumslag-Solitar quotients as subgroups. This implies that they are translation discrete, meaning that the translation numbers of their nontorsion elements are bounded away from zero. | eng_Latn | 7,521 |
Recent advances in gas detection using optical correlation spectroscopy | A unique approach to gas detection using optical correlation spectroscopy (OCS) has been investigated. By employing a semiconductor optical amplifier (SOA) with an optical fibre delay line to generate the anti-phase signal, zero point drift errors are minimised and compatibility with single mode optical fibre systems has been achieved. Experimental results, obtained for varying concentrations of acetylene (C 2 H 2 ) gas at different pressures, agree well with the theoretical analysis. Signal-to-noise ratio (SNR) analysis was also performed to predict the theoretical minimum detectable concentration for C 2 H 2 . | By searching for the optimal mechanism in various scattering mechanisms,coherence optimization process can get the maximum coherence.The process can be used to improve the coherence between SAR images for InSAR system.And for POLInSAR system,it not only can be used to improve the coherence between different polarization channels,but also use can help to improve classification and vertical structure parameters estimation process.So it is very important to SAR.The proposed coherence optimization algorithm has solved the problem that the existing algorithms cannot obtain the global maximum value,by making use of genetic algorithm in the optimization process meanwhile avoiding using searching method.Experimental results have shown that compared to the existing algorithms,greater coherence can be obtained. | eng_Latn | 7,522 |
Frequency domain investigation of passively mode-locked lasers with intra-cavity frequency conversion | A simple and versatile frequency-domain description of the dynamics of the multimode laser incorporating intra-cavity nonlinear elements for both mode-locking and frequency conversion has been developed. Results of the numerical modeling show that incorporation of nonlinear frequency-conversion element can drastically affect the dynamics of mode-locking. | A new time-domain procedure is suggested for obtaining reduced-order models of linear time-invariant discrete-time systems. The procedure is based on presenting a new form of continued-fraction expansion (CFE) about z = 1 and z = a alternately, and deriving a realization form for the CFE. An algorithm is presented for obtaining the new CFE of the z transfer function of a linear discrete-time system from its state-space model directly, without having to determine the corresponding rational z transfer function. Also presented is a systematic approach to deriving two similarity transformation matrices: one is used to transform a state-space model from a general form to the CFE canonical form, and the other is used to transform a state-space model from the phase-variable canonical form to the CFE canonical form. Finally, an approximate aggregation matrix is constructed to relate the state vector of the original system to that of a reduced model obtained by the present method. The proposed procedure is illustr... | eng_Latn | 7,523 |
Spectral correlation and noise reduction in laser filaments | Optical rogue wave statistics in laser filamentation | Completely Stale Transmitter Channel State Information is Still Very Useful | eng_Latn | 7,524 |
A parametric study of laser induced-effects in terbium-doped borosilicate glasses: prospects for compact magneto-optic devices | Femtosecond laser processing in magneto-optical glasses | The PTPN22 Locus and Rheumatoid Arthritis: No Evidence for an Effect on Risk Independent of Arg620Trp | eng_Latn | 7,525 |
Application of Fast Switching Phase Calibration atmm Wavelengths on 33 km Baselines | Using Fast-Switching Data to Characterize Atmospheric Phase Fluctuations at the Submillimeter Array | Completely Stale Transmitter Channel State Information is Still Very Useful | eng_Latn | 7,526 |
Permutation in rearrangeable nonblocking optical MINs with zero first-order switching-element-crosstalk | Performance of ProcessorMemory Interconnections for Multiprocessors | Recombinant fragment of protein kinase inhibitor blocks cyclic AMP-dependent gene transcription | eng_Latn | 7,527 |
Analysis of grating-coupled radiation in GaAs:GaAlAs lasers and waveguides - II: Blazing effects | All-optical networks for platforms connected to the global information grid | TPA-induced inhibition of gap junctional intercellular communication is not mediated through free radicals. | eng_Latn | 7,528 |
All-Optical Clock Recovery Using the Temporal Talbot Effect | Wavelength tunable all-optical clock recovery using a fiber parametric oscillator | Self-insight into emotional and cognitive abilities is not related to higher adjustment | eng_Latn | 7,529 |
Blockers of potassium channels reduce the outward dark current in rod photoreceptor inner segments | Structures, Mechanisms, and Energetics in Temporal Processing | Measurement of the Resonant Magneto-Optical Kerr Effect Using a Free Electron Laser | eng_Latn | 7,530 |
Experimental investigation of stability limits and upstream flame propagation in a lean premixed , swirled annular slot burner | Cinematographic Imaging of Hydroxyl Radicals in Turbulent Flames by Planar Laser-Induced Fluorescence up to 5 kHz Repetition Rate | Completely Stale Transmitter Channel State Information is Still Very Useful | eng_Latn | 7,531 |
Manipulating ultrashort intense laser pulses by plasma Bragg gratings | Plasma optical modulators for intense lasers | No Detectable Broad-Scale Effect of Livestock Grazing on Soil Blue-Carbon Stock in Salt Marshes | eng_Latn | 7,532 |
Nematicons: reorientational solitons from optics to photonics | Temperature control of nematicon trajectories | Soliton like solutions and subsurface behaviour of the nematic layer | eng_Latn | 7,533 |
THz Wave Generation by Difference Frequency Mixing in Photonic Crystal Cavity | Novel sources and detectors for coherent tunable narrow-band terahertz radiation in free space | Transcriptional activation of HIF-1 by a ROS-ERK axis underlies the resistance to photodynamic therapy | eng_Latn | 7,534 |
Negative feedback in an actively mode-locked laser | Stable generation of high-power subnanosecond laser pulses | Comparing the performance of two iterative Learning Controllers with optimal feedback control | eng_Latn | 7,535 |
Optical Receiver for Optical Time Domain Reflectometer | Design of CMOS Differential Transimpedance Amplifier | Performance enhancement for a self-heterodyne detection Brillouin optical time-domain reflectometer | eng_Latn | 7,536 |
Optical properties of high power S-band fiber oscillators and amplifiers | High power laser operation with crystal fibers | Numerical investigation of high-power single frequency fiber amplifiers at a wavelength of 1018nm | eng_Latn | 7,537 |
Phase Noise Suppression In Coherent Optical Communication Systems By Differential Modulation | A coherent optical system for analogue multichannel video transmission | A Novel Modulation Scheme of Polar Codes | eng_Latn | 7,538 |
PARAMETER EFFECTS ON TEMPERATURES IN THE THIN FILM IRRADIATED BY ULTRAFAST-PULSE LASER | Numerical Calculations for Femtosecond-Pulsed Laser Ablation of Gold Films with Vaporization Mechanism | No evidence for apparent extent between parallels as the basis of the Poggendorff effect | yue_Hant | 7,539 |
Development of a 5.4 MV laser triggered gas switch for multimodule, multimegampere pulsed power drivers | Plasma fluorination of BaTiO3 for enhancement of interfacial adhesion and surface insulation of epoxy resin | Experimental and Numerical Investigations on Q-Switched Laser-Seeded Fiber MOPA at 2.8 μm | eng_Latn | 7,540 |
Stable multiwavelength and passively mode-locked Yb-doped fiber laser based on nonlinear polarization rotation | Tunable Multiwavelength Passively Mode-Locked Fiber Ring Laser Using Intracavity Birefringence-Induced Comb Filter | Translational repression by MSY4 inhibits spermatid differentiation in mice. | eng_Latn | 7,541 |
A Theoretical and Experimental Investigation of the Technique of Laser-Intermodulated Fluorescence for Scattering Correction in Atomic Fluorescence Flame Spectrometry | Continuous and discrete signal and system analysis | Corrected FIM effectiveness as an index independent of FIM score on admission | eng_Latn | 7,542 |
High-performance terahertz source based on a bimodal laser diode and a plasmonic photomixer | Design of Single-Mode and Two-Color Fabry--PÉrot Lasers With Patterned Refractive Index | 5-HT3 receptor ligands lack modulatory influence on acetycholine release in rat entorhinal cortex | eng_Latn | 7,543 |
Large enhancement of third-harmonic generation induced by coupled gap solitons in chi(3) nonlinear photonic crystals. | Simultaneous High-Efficiency Second- and Third-Harmonic Generation in a 1-D Semiconductor Photonic Crystal | Further evidence of impaired tactile learning after removals of the second somatic sensory projection cortex (SII) in the monkey | eng_Latn | 7,544 |
Extraction Enhancement and Collimation from a Thin-Film InGaN/GaN Photonic Crystal Light-Emitting Diodes | GaN-based film-transferred light-emitting diodes with photonic crystal | GaN-based film-transferred light-emitting diodes with photonic crystal | eng_Latn | 7,545 |
Rock heterogeneity numerical simulation as a factor of drill bit instability | Instability regimes and self-excited vibrations in deep drilling systems | Highly coherent RF signal generation by heterodyne optical phase locking of external cavity semiconductor lasers | eng_Latn | 7,546 |
The Silicon Photomultiplier for application to high-resolution Positron Emission Tomography | PeneloPET simulations of the Biograph ToF clinical PET scanner | On the suitability of employing silicon photomultipliers for underwater wireless optical communication links | eng_Latn | 7,547 |
Optical Electronics in Modern Communications Fifth Edition | Design of a chaotic optical communication system by using RAMAN with noise addition technique | Industrial View of III–V Devices Compact Modeling for Circuit Design | eng_Latn | 7,548 |
Light Emission from a Si Based ZnO Structure | Heterogeneous integration of microdisk lasers on silicon strip waveguides for optical interconnects | Exposure to Zinc oxide nanoparticles during pregnancy induces oocyte DNA damage and affects ovarian reserve of mouse offspring | eng_Latn | 7,549 |
Diffusion-controlled picosecond carrier dynamics in ErAS:GaAs superlattice | Highly tunable fiber-coupled photomixers with coherent terahertz output power | Characterization of the NASA Langley Arc Heated Scramjet Test Facility using NO PLIF | eng_Latn | 7,550 |
Steady-state Ab Initio Laser Theory: Generalizations and Analytic Results | All-optical control of lead halide perovskite microlasers | Backstepping control of the Stefan problem with flowing liquid | eng_Latn | 7,551 |
A PHASE-COHERENT LINK BETWEEN THE VISIBLE AND INFRARED SPECTRAL RANGES USING A COMBINATION OF CW OPO AND FEMTOSECOND LASER FREQUENCY COMB | Referencing femtosecond laser frequency combs to a He-Ne/CH4 optical frequency standard | Constant delay enumeration with FPT-preprocessing for conjunctive queries of bounded submodular width | yue_Hant | 7,552 |
Modelling of a Versatile All-Optical Mach-Zehnder Switch | Overlapping-image multimode interference couplers with a reduced number of self-images for uniform and nonuniform power splitting. | Opto-mechanical review of a light weight compact visible zoom camera | eng_Latn | 7,553 |
Population grating induced by time-delayed, correlated, broadband light pulses in the strong-field regime | Theoretical study of ultrafast dephasing by four-wave mixing | No Detectable Broad-Scale Effect of Livestock Grazing on Soil Blue-Carbon Stock in Salt Marshes | eng_Latn | 7,554 |
Wide-field Adaptive Optics correction using a single rotating laser guide star | Ground layer adaptive optics system simulation for the 2.5m telescope in Dome A | The PTPN22 Locus and Rheumatoid Arthritis: No Evidence for an Effect on Risk Independent of Arg620Trp | eng_Latn | 7,555 |
Technique of pico-femtosecond scale temporal measurements | Optics of Femtosecond Laser Pulses | Improving the Temporal Flexibility of Position Constrained Metric Temporal Plans | eng_Latn | 7,556 |
Photoactive Yellow Protein Terahertz Response: Hydration, Heating and Intermediate States | Measurements of complex refractive index change of photoactive yellow protein over a wide wavelength range using hyperspectral quantitative phase imaging | Transcriptional activation of HIF-1 by a ROS-ERK axis underlies the resistance to photodynamic therapy | eng_Latn | 7,557 |
Analysis of low-order autoregressive models for ultrasonic grain signal characterization | Application of Linear Predictive Analysis in Ultrasonic Grain Signal Characterization | Ultrafast All-Optical Signal Processing Based on Single Semiconductor Optical Amplifier and Optical Filtering | eng_Latn | 7,558 |
High-power, high-repetition rate pulser for photo-impulse ionized lasers. | Triggered Spark Gap Command Charger for High Repetition Rate Applications | Rapid Immunochromatographic Malarial Antigen Detection Unreliable for Detecting Plasmodium malariae and Plasmodium ovale | eng_Latn | 7,559 |
Crack propagation in homogeneous and bimaterial sheets under general in-plane loading: Nonlinear analysis | Finite crack kinking and T-stresses in functionally graded materials | Highly coherent RF signal generation by heterodyne optical phase locking of external cavity semiconductor lasers | eng_Latn | 7,560 |
Numerical model of a Q-switched double-clad fiber laser | Analysis and design of high output power from a two-arm coherently combined Q-switched fiber laser | Dynamic assembly of end-joining complexes requires interaction between Ku70/80 and XRCC4 | eng_Latn | 7,561 |
Periodic nanovoid structures via femtosecond laser irradiation | Femtosecond Laser Writing of Optical Waveguides by Self-Induced Multiple Refocusing in LiTaO3 Crystal | First Spectroscopic Study in the Near-Infrared (NIR) of Self-Forming Nano Vesicles | eng_Latn | 7,562 |
Accuracy improvement of optical vector network analyzer based on single-sideband modulation | Hyperfine Intrinsic Magnitude and Phase Response Measurement of Optical Filters Based on Electro-Optical Harmonics Heterodyne and Wiener–Lee Transformation | Two-dimensional coronary MRA: limitations and artifacts | eng_Latn | 7,563 |
Transmission of intense femtosecond laser pulses into dielectrics | Time resolved digital holography measurements of the nonlinear optical filters | Failure distributions of successive dielectric breakdown events | eng_Latn | 7,564 |
Compact optical temporal processors | Active pulse compression using an integrated electro‐optic phase modulator | Completely water-processable and other chemically amplified resists from maleic anhydride copolymers | eng_Latn | 7,565 |
Diode-pumped alexandrite ring laser in single-longitudinal mode operation for atmospheric lidar measurements | High efficiency >26 W diode end-pumped Alexandrite laser. | Delayed Reactive Distractor Suppression in Aging Populations | eng_Latn | 7,566 |
Optimization of the Power Spectral Density of Raman-MOPAS using Fiber Bragg Gratings with Tunable Chirp | Watts-level frequency doubling of a narrow line linearly polarized Raman fiber laser to 589 nm | Cardiac sympathetic denervation is not related to nigrostriatal degeneration in Parkinson’s disease | eng_Latn | 7,567 |
Quantum interference: experiments and applications | Producing high fidelity single photons with optimal brightness via waveguided parametric down-conversion | TPA-induced inhibition of gap junctional intercellular communication is not mediated through free radicals. | eng_Latn | 7,568 |
Method to control near-field bowing of laser diode arrays by balancing the thermal-induced stress | Low SMILE Vertically Stacked Laser Bars Enable KW Modular Line Lasers | SNARE Function Is Not Involved in Early Endosome Docking | eng_Latn | 7,569 |
Nonlinear mirror based on two-photon absorption | Heuristic recurrent algorithms for photonic Ising machines | A Robust Adaptive Nonlinear Control Design | eng_Latn | 7,570 |
High-power tunable diode-pumped Yb 3+:CaF2 laser | Passive mode-locking of diode-pumped Yb:KYF4 laser | Tbx1 is a negative modulator of Mef2c | eng_Latn | 7,571 |
Compact 500.9 nm laser based on doubly resonant intracavity sum–frequency mixing | Generation of 20 mW of blue laser radiation from a diode‐pumped sum‐frequency laser | Delayed Reactive Distractor Suppression in Aging Populations | eng_Latn | 7,572 |
Mass production automated test system for the NEXT SiPM tracking plane | Characterization of UV-enhanced SiPMs for imaging in a high pressure xenon electroluminescent TPC | Direct, rapid quantitative analyses of BVOCs using SIFT-MS and PTR-MS obviating sample collection | eng_Latn | 7,573 |
Laser cooling in the condensed phase by frequency up-conversion | Laser refrigeration of hydrothermal nanocrystals in physiological media | Completely Stale Transmitter Channel State Information is Still Very Useful | eng_Latn | 7,574 |
CONTINUOUSLY TUNABLE ERBIUM-DOPED FIBER RING LASER USING FIBER BRAGG GRATING | FABRICATION OF FIBER BRAGG GRATINGS IN HIGH GERMANIA BORN CO-DOPED OPTICAL FIBER OPTICAL FIBER BY THE PHASE MASK METHOD | Self-insight into emotional and cognitive abilities is not related to higher adjustment | yue_Hant | 7,575 |
Generation and distribution of a wide-band continuously tunable millimeter-wave signal with an optical external modulation technique | WDM up-conversion employing frequency quadrupling in optical modulator. | 5-HT3 receptor ligands lack modulatory influence on acetycholine release in rat entorhinal cortex | eng_Latn | 7,576 |
Viterbi detector architectures for magnetic recording | Equalization and FEC techniques for optical transceivers | Microtubule capture by CENP-E silences BubR1-dependent mitotic checkpoint signaling | eng_Latn | 7,577 |
Performance Evaluation of Optical Soliton Communication Systems with Lumped Amplifiers | Soliton propagation in long fibers with periodically compensated loss | Soliton propagation in long fibers with periodically compensated loss | eng_Latn | 7,578 |
Packaged heterodyne source modules based on external cavity lasers for microwave applications | Highly coherent RF signal generation by heterodyne optical phase locking of external cavity semiconductor lasers | Evidence against a role for platelet-derived molecules in liver regeneration after partial hepatectomy in humans | eng_Latn | 7,579 |
Numerical analysis of micro-aperture laser for near field optical data storage | Surface polaritons : electromagnetic waves at surfaces and interfaces | Nrf2 activation through the PI3K/GSK-3 axis protects neuronal cells from Aβ-mediated oxidative and metabolic damage | eng_Latn | 7,580 |
Quality Standardization for Polydimethysiloxane-Based Optical Interconnect Production From Optical Aspects | PDMS-based optical waveguide layer for integration in electrical–optical circuit boards | Oral spray wintertime vitamin D3 supplementation has no impact on inflammation in Gaelic footballers | eng_Latn | 7,581 |
Lasers in analysis: Potential and prospects for the development of ultrashort pulsed lasers | Nonlinear selective photoprocesses in atoms and molecules | Ultrashort pulse laser ionization microscopy | eng_Latn | 7,582 |
A Decay Result for Certain Windows Generating Orthogonal Gabor Bases | The Balian-Low theorem and regularity of Gabor systems | Highly coherent RF signal generation by heterodyne optical phase locking of external cavity semiconductor lasers | eng_Latn | 7,583 |
Multi-kW IR and green nanosecond thin-disk lasers | Passive mode locking of thin disk lasers: effects of spatial hole burning | 1400W Is a Slow, Tight Binding, and Highly Selective Inhibitor of Inducible Nitric-oxide Synthase in Vitro and in Vivo | eng_Latn | 7,584 |
Research of High-Speed FBG Demodulation System for Distributed Dynamic Monitoring of Mechanical Equipment | Performance Optimization Design for a High-Speed Weak FBG Interrogation System Based on DFB Laser | Performance Optimization Design for a High-Speed Weak FBG Interrogation System Based on DFB Laser | eng_Latn | 7,585 |
Jointly optimal receivers for the optical pulse-position modulation channel | Photon Jitter Mitigation for the Optical Channel | The Uncoupling of Oxidative Phosphorylation of Mouse- Liver Mitochondria in vivo by Usnic Acid | eng_Latn | 7,586 |
Microwave channelization based on dual coherent optical frequency combs | Coherent wideband microwave channelizer based on dual optical frequency combs | Completely Stale Transmitter Channel State Information is Still Very Useful | eng_Latn | 7,587 |
Performance of PML absorbing boundary conditions in 3D photonic crystal waveguides | The failure of perfectly matched layers, and towards their redemption by adiabatic absorbers | Absence of CCR8 does not impair the response to ovalbumin-induced allergic airway disease. | eng_Latn | 7,588 |
Advanced UV Lasers Enable Precision Processing | Preserving rapid prototypes: a review | 101 Flux Decline in Ultrafiltration Processes | kor_Hang | 7,589 |
Ultralow threshold lasers. How low is low enough? | Sub-milliampere single-quantum-well InGaAs-GaAs-AlGaAs addressable laser arrays | Use of low potency estrogens does not reduce the risk of hip fracture | eng_Latn | 7,590 |
The optical dispersive prism is a well-studied element, which allows separating white light into its constituent spectral colors, and stands in nature as water droplets. In analogy to this definition, the acoustic dispersive prism should be an acoustic device with capability of splitting a broadband acoustic wave into its constituent Fourier components. However, due to the acoustical nature of materials as well as the design and fabrication difficulties, there is neither any natural acoustic counterpart of the optical prism, nor any artificial design reported so far exhibiting an equivalent acoustic behaviour. Here, based on exotic properties of the acoustic transmission-line metamaterials and exploiting unique physical behaviour of acoustic leaky-wave radiation, we report the first acoustic dispersive prism, effective within the audible frequency range 800 Hz - 1300 Hz. The dispersive nature, and consequently the frequency-dependent refractive index of the metamaterial are exploited to split the sound waves towards different and frequency-dependent directions. Meanwhile, the leaky-wave nature of the structure facilitates the sound wave radiation into the ambient medium. | Like their optical counterparts, acoustic metamaterials are capable of manipulating sound waves in unusual ways. An acoustic hyperlens is now demonstrated that is capable of magnifying subwavelength acoustic waves, and could therefore find applications in medical imaging or underwater sonar. | The development of low-cost and fast photoacoustic microscopy systems enhances the clinical applicability of photoacoustic imaging systems. To this end, we present a laser scanning laser diode-based photoacoustic microscopy system. In this system, a 905 nm, 325 W maximum output peak power pulsed laser diode with 50 ns pulsewidth is utilized as the light source. A combination of aspheric and cylindrical lenses is used for collimation of the laser diode beam. Two galvanometer scanning mirrors steer the beam across a focusing aspheric lens. The lateral resolution of the system was measured to be ∼21 μm using edge spread function estimation. No averaging was performed during data acquisition. The imaging speed is ∼370 A-lines per second. Photoacoustic microscopy images of human hairs, ex vivo mouse ear, and ex vivo porcine ovary are presented to demonstrate the feasibility and potentials of the proposed system. | eng_Latn | 7,591 |
At present, we can observe progress in physics of crystalline Raman lasers leading to efficient nonlinear frequency conversion at transient regime for generation of ultra-short pulses of stimulated Raman scattering (SRS) radiation with picosecond duration and shorter [1,2]. Recently the problem of a femtosecond crystalline Raman laser with femtosecond pumping has been solved [1] using an efficient SRS in a Raman-active crystal (CVD-diamond) under synchronous pumping by repetitive femtosecond laser pulses in an external cavity with a round-trip time equal to the pump pulse repetition period. However, a challenge of femtosecond SRS pulse generation in crystals under pumping by picosecond lasers which is more simple, inexpensive, and prevalent in comparison with the unique femtosecond laser systems remained unsolved. | We report a synchronously pumped femtosecond diamond Raman laser operating at 895 nm with a 33% slope efficiency. Pumped using a mode-locked Ti:sapphire laser at 800 nm with a duration of 170 fs, the bandwidth of the Stokes output is broadened and chirped to enable subsequent pulse compression to 95 fs using a prism pair. Modeling results indicate that self-phase modulation drives the broadening of the Stokes spectrum in this highly transient laser. Our results demonstrate the potential for Raman conversion to extend the wavelength coverage and pulse shorten Ti:sapphire lasers. | We report a synchronously pumped femtosecond diamond Raman laser operating at 895 nm with a 33% slope efficiency. Pumped using a mode-locked Ti:sapphire laser at 800 nm with a duration of 170 fs, the bandwidth of the Stokes output is broadened and chirped to enable subsequent pulse compression to 95 fs using a prism pair. Modeling results indicate that self-phase modulation drives the broadening of the Stokes spectrum in this highly transient laser. Our results demonstrate the potential for Raman conversion to extend the wavelength coverage and pulse shorten Ti:sapphire lasers. | eng_Latn | 7,592 |
I would like to summarize where we are in the development of High-Energy Laser weapons systems. The feasibility of shooting down rockets, artillery, and mortars (RAM) targets with a high energy chemical laser was demonstrated with the Tactical High Energy Laser (THEL) program over 10 years ago. Although the THEL demonstration was success, the logistics and safety issues associated with the chemicals used to power the laser made it impractical for use as a fielded weapons system for the Army. To overcome these issues, emphasis shifted towards the development of solid-state lasers as they are electrically powered. | At MBDA Deutschland GmbH currently a high-energy laser weapon demonstrator is designed with the focus on CRAM (counter rocket, artillery, mortar) and counter UAV scenarios. The demonstrator consists of four industrial fiber lasers that are geometrically coupled in one beam director telescope. With this coupling scheme one telescope can provide sufficient laser energy for a successful CRAM operation. For coarse alignment of the telescope an industrial robot is used; within the telescope two underlying, cascaded control loops of actuated mirrors ensure the ability to position the laser beam with μrad precision on the target. With the first actuated mirror stage (the secondary mirror of the telescope) all laser beams can be controlled simultaneously. This stage is primarily used to compensate for tracking errors due to the limited dynamics of the robot coarse actuation system. The second mirror stage consists of piezo servo loops. One piezo loop each is used to control one laser beam of the telescope. The main task of this actuation stage is to compensate for higher frequency disturbances that could not be attenuated by the other control loops (such as vibrations, atmospheric turbulence, etc.). The paper at hand details the layout of the control loops necessary for pointing the telescope on the target and then for tracking and holding the laser beams on the target. First simulation models and results are presented for pointing and tracking a target with the robot coarse actuation system; then the inner control loops of the telescope are described with special emphasis on the different modes of operation and system interaction/coupling during the engagement cycle. At the end of the paper simulation results are compared with measurements that have been recorded while tracking a drone at the company test site. | Berzelius failed to make use of Faraday's electrochemical laws in his laborious determination of equivalent weights. | eng_Latn | 7,593 |
Hyperspectral imagery is currently being evaluated for its potential to solve a number of complex imagery intelligence issues. Acousto-Optical Tunable Filters offer a potentially valuable alternative to standard imaging spectrometer designs. The work from previous and on-going programs is indicative of this potential. | Acousto-optic tunable filters are powerful tools for spectroscopy, imaging, and WDM. Gupta traces the development of these devices and discusses current and future applications. | Acousto-optic tunable filters are powerful tools for spectroscopy, imaging, and WDM. Gupta traces the development of these devices and discusses current and future applications. | eng_Latn | 7,594 |
We report an experimental and numerical investigation on the existence of additional delayed-time in chaos synchronization of two uni-directionally coupled vertical-cavity surface-emitting lasers (VCSELs) for the first time. Under a generalized synchronization scenario, we demonstrate that there exists an additional delayed-time in addition to the time-of-flight between the two coupled VCSELs. The cross-correlation function analysis has been used as a method to determine the coupling delay and synchronization quality between two uni-directionally coupled chaotic VCSELs. We show that the injection strength significantly influences the additional delayed-time, and the injection strength analysis eventually substantiates the existence of additional delayed-time between the coupled lasers in experiments. The experimental results are in accordance with the numerical results. Additionally, we numerically study the effect of laser’s internal parameter mismatches on additional delayed-time and synchronization quality between the lasers.We report an experimental and numerical investigation on the existence of additional delayed-time in chaos synchronization of two uni-directionally coupled vertical-cavity surface-emitting lasers (VCSELs) for the first time. Under a generalized synchronization scenario, we demonstrate that there exists an additional delayed-time in addition to the time-of-flight between the two coupled VCSELs. The cross-correlation function analysis has been used as a method to determine the coupling delay and synchronization quality between two uni-directionally coupled chaotic VCSELs. We show that the injection strength significantly influences the additional delayed-time, and the injection strength analysis eventually substantiates the existence of additional delayed-time between the coupled lasers in experiments. The experimental results are in accordance with the numerical results. Additionally, we numerically study the effect of laser’s internal parameter mismatches on additional delayed-time and synchronization qua... | The influence of intra-cavity propagation delay in message encoding and decoding using chaotic semiconductor lasers is numerically investigated. A message is encoded at the transmitter laser by a chaos shift keying scheme and is decoded at the receiver by comparing its output with the transmitter laser. The requisite intra-cavity propagation delay in achieving synchronization of optical chaos is estimated by cross-correlation analysis between the transmitter and receiver lasers’ output. The effect of intra-cavity propagation delay on the message recovery has been analyzed from the bit error rate performance. It is found that despite the intra-cavity propagation delay magnitude being less, it has an impact on the quality of message recovery. We also examine the dependency of injection rate, frequency detuning, modulation depth and bit rate on intra-cavity propagation delay and associated message recovery quality. We found that the communication performance has been adequately improved after incorporating intra-cavity propagation delay correction in the synchronization system. | We prove that groups acting geometrically on delta-quasiconvex spaces contain no essential Baumslag-Solitar quotients as subgroups. This implies that they are translation discrete, meaning that the translation numbers of their nontorsion elements are bounded away from zero. | eng_Latn | 7,595 |
Operation of a new nonlinear backward‐wave optical device which produces the conjugate of an arbitrary incident wave front is demonstrated. Good‐quality reconstructed images are obtained through a phase distorting media. | This paper deals with certain nonlinear effects that,can directly generate a wavefront which is the phase conjugate of the incident field. These phenomena can be exploited in pulsed laser systems to remove aberrations in the optical train as well as aberrations arising from turbulence in the atmosphere. We discuss our measurements of the effectiveness of this conjugation process using a ruby laser and stimulated Brillouin scattering in a CS2 waveguide device. Measurements are made of the divergence angle of the beam after correction as a function of interaction length. The application of conjugate processes realizable in SBS, SRS, parametric down conversion, and four-wave mixing is considered for typical CO2 laser systems. System gain, backscatter limitations and parasitic oscillation are discussed for typical pulsed amplifier systems. Amplified spontaneous emission and unwanted glint returns from optical defects appear to be the most serious limitations.© (1977) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only. | Berzelius failed to make use of Faraday's electrochemical laws in his laborious determination of equivalent weights. | eng_Latn | 7,596 |
Single mode operation was exhibited on the Israeli tandem free-electron laser (FEL). This enabled judicious measurements of narrow spectral linewidth, frequency chirp, and relaxation-oscillation effects. Exact 3D simulations of the FEL oscillator showed good agreement with the measurements, and permitted an estimation of the fundamental Schawlow-Towns linewidth limit of the FEL (including “a effect”) as well as technical noise linewidth limits. We estimate that with voltage-controlled stabilization high-power (10 kW) tunable (over 60% bandwidth) quasi-cw coherent Dn n rms 10210 mm-FIR (far infrared) radiation is attainable in the tandem FEL. [S0031-9007(99)09370-9] | An Injection locking system has been implemented on the Millimeter Wave Free-Electron Laser (MM-FEL) at the University of California, Santa Barbara (UCSB). It it is based on a commercially available varactor multiplier source and quasi-optical isolator operating at 240 GHz. Lasing on multiple longitudinalmodes is shown to collapse to a single repeatable mode by introducing a low power CW signal into the FEL resonator through a silicon-plate coupler. High power and extremely narrow linewidth operation will enable new experimental opportunities such as FEL based pulsed electron paramagnetic resonance spectroscopy. | Berzelius failed to make use of Faraday's electrochemical laws in his laborious determination of equivalent weights. | eng_Latn | 7,597 |
The exceptionally high efficiency and compactness of the diode laser have made it one of the key elements of the engineering systems throughout many different areas of industry. The decisive factor in the performance of the high-power diode laser in individual applications, is the quality of its beam emission. Applications in the high-power range require the use of micro-optical components, in order to maximise the use of light and, at the same time, to minimise the degree to which the beam quality depends on the direction of emission. These micro-optical components are vital to the basic function of the high-power diode laser and, more particularly, to its efficiency. In addition to the function-determining characteristics, the high levels of precision and reproducibility of the optics in serial manufacture along with the option of a monolithic structure will be of interest to laser manufacturers. The requirements arising from the basic construction of the diode laser, which must be met by micro-optics, will therefore be defined in the course of this contribution. In the second section, concepts for solutions, which take full account of these requirements, will be presented. Finally, optics used in high-power diode lasers will be discussed in the conclusion. | Diode-laser systems have a good chance to be used as light sources for direct applications. For this purpose a large number of relatively weak light bundles originating from individual oscillators have to be coupled to a single powerful beam. The coupling may be done in a completely incoherent way in cases where only a moderate beam quality is appropriate or with increasing degrees of coherence corresponding to applications where high demands on the quality are necessary. In this article all current methods of incoherent as well as of coherent beam combining are described and judged with respect to their present and future potential. | By using a superluminescent diode as the light source and a depolariser inside the fibre coil, a constant scale factor is achieved without using polarisation control elements. For long-term behaviour an RMS-bias drift of 10 degrees/h is obtained. | eng_Latn | 7,598 |
By using a tunable-ratio optical coupler (TROC) to adjust the wavelength dependent intra-cavity loss, a L-band mode-locked erbium-doped fiber-ring laser (ML-EDFL) is demonstrated for generating wavelength-tunable femtosecond pulses. The change of output coupling ratio introduces different intra-cavity loss and shifts the peak of mode-locked gain profile to provide continuous detuning on wavelength of the ML-EDFL. A maximum tuning range of about 40 nm (from 1565.1 to 1605.3 nm) by decreasing the output coupling ratio from 95% to 5% is obtained, corresponding to a wavelength tuning slope of 2.25 nm/dB. The ML-EDFL exhibits a super-mode suppressing ratio as high as 47 dB and a pulsewidth of <5 ps at repetition frequency of 1 GHz. Nearly transform-limited pulsewidth of 580 fs is generated by linear dispersion compressing the EDFL pulses with a 32.5m-long single-mode fiber under an output coupling ratio of 10%. | We report 100-channel transmission of both C- and l-band with 765 Gb/s capacity over a distance of 2,000 km. To achieve this transmission result, we utilized dispersion flattened transmission and broadband medium gain erbium doped fiber amplifiers. | Berzelius failed to make use of Faraday's electrochemical laws in his laborious determination of equivalent weights. | eng_Latn | 7,599 |
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