Results 91 to 100 of about 35,755 (270)
Airborne water vapor DIAL system and measurements of water and aerosol profiles [PDF]
The Lidar Applications Group at NASA Langley Research Center has developed a differential absorption lidar (DIAL) system for the remote measurement of atmospheric water vapor (H2O) and aerosols from an aircraft.
Browell, Edward V., Higdon, Noah S.
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Why the laser linewidth is so narrow: A modern perspective
, 2015 We review and interpret a modern approach to laser theory, steady-state ab initio laser theory (SALT), which treats lasing and amplification in a unified manner as a non-unitary scattering problem described by a non-linear scattering matrix.
Cerjan, Alexander, Stone, A. Douglas
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Advanced Photonics Research, EarlyView.This review highlights recent advances in accelerating luminescence in nanostructures through cooperative emission, resonator coupling, and nonlocal light–matter interactions. By unifying concepts such as excitonic superradiance, superfluorescence, and the plasmonic Purcell effect, it reveals physical limits of ultrafast emission and their potential ...
Masaaki Ashida +3 more
wiley +1 more source
Integrated Electro‐Optically Tunable Narrow‐Linewidth III–V Laser
Advanced Photonics ResearchHerein, an integrated electro‐optically tunable narrow‐linewidth III–V laser with an output power of 738.8 μW and an intrinsic linewidth of 45.55 kHz at the C band is demonstrated.
Yiran Zhu +10 more
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All-optical wavelength-tunable narrow-linewidth fiber laser
, 2017 Parameter regulations of narrow-linewidth fiber lasers in frequency domain has drawn considerable interests for widespread applications in the light quantum computing, precise coherent detection, and generation of micro-waves. All-optical methods provide
Cao, Yulong +5 more
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An Efficient Diamond Raman Amplification Scheme Based on Adaptive Temporal Synchronization
Advanced Photonics Research, EarlyView.This work reveals an adaptive temporal synchronization effect in delayed diamond Raman amplification, where the Stokes pulse shifts toward the fundamental peak. A periodic amplification scheme based on this phenomenon enables efficient pump recycling and enhanced energy conversion, offering a robust, delay‐tolerant strategy for advanced nonlinear ...
Hao Zheng +7 more
wiley +1 more source
High Power Laser Science and EngineeringIn this paper, we have experimentally demonstrated a high-power and high-brightness narrow-linewidth fiber amplifier seeded by an optimized fiber oscillator.
Xin Tian +8 more
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Laser Phase and Frequency Stabilization Using Atomic Coherence
, 2012 We present a novel and simple method of stabilizing the laser phase and frequency by polarization spectroscopy of an atomic vapor. In analogy to the Pound-Drever-Hall method, which uses a cavity as a memory of the laser phase, this method uses atomic ...
D. Budker +7 more
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Navigating the Ethereal Tightrope: The Nanogenerator Manipulates Neurons for Immune Equilibrium
Advanced Science, EarlyView.This review explores how nanogenerators modulate neuroimmune responses, offering innovative strategies for treating neurological disorders. By interfacing with neural pathways, they enable precise control of immune activity, especially via vagus nerve stimulation.
Jia Du +5 more
wiley +1 more source
Advanced Science, EarlyView.Cryogenic cooling induces an orthorhombic‐to‐monoclinic phase transition in CsPbBr3 quantum dots, accompanied by pronounced strain localization at surfaces and interfaces. Multimodal in situ STEM directly visualize reversible defect healing during moderate cryogenic treatment and irreversible degradation upon prolonged exposure, revealing the intrinsic
Xinjuan Li +10 more
wiley +1 more source