Results 51 to 60 of about 34,641 (302)
Narrow Linewidth Distributed Bragg Reflectors Based on InGaN/GaN Laser
Micromachines, 2019 A variety of emerging technologies, such as visible light communication systems, require narrow linewidths and easy-to-integrate light sources. Such a requirement could be potentially fulfilled with the distributed Bragg reflector (DBR) lasers, which are
Wuze Xie +5 more
doaj +1 more source
Linewidth Narrowing of Mutually Injection Locked Semiconductor Lasers with Short and Long Delay
Applied Sciences, 2019 A simple and effective approach to semiconductor laser linewidth narrowing via mutual injection locking is proposed and demonstrated in both short and long delay regimes.
Weichao Ma +10 more
doaj +1 more source
Accurate evaluation of self-heterodyne laser linewidth measurements using Wiener filters
, 2023 Self-heterodyne beat note measurements are widely used for the experimental characterization of the frequency noise power spectral density (FN-PSD) and the spectral linewidth of lasers.
Mertenskötter, Lutz +5 more
core +1 more source
Prospects for a Millihertz-Linewidth Laser [PDF]
Physical Review Letters, 2009 We propose a new light source based on having alkaline-earth atoms in an optical lattice collectively emit photons on an ultranarrow clock transition into the mode of a high Q resonator. The resultant optical radiation has an extremely narrow linewidth in the mHz range, even smaller than that of the clock transition itself due to collective effects.
Meiser, D. +3 more
openaire +2 more sources
Bayesian Estimation of Laser Linewidth from Delayed Self-Heterodyne Measurements
, 2023 We present a statistical inference approach to estimate the frequency noise characteristics of ultra-narrow linewidth lasers from delayed self-heterodyne beat note measurements using Bayesian inference.
Mertenskötter, Lutz, Kantner, Markus
core +1 more source
Linewidth and phase noise characteristics of DFB fibre lasers
, 2004 The anomalous linewidth behavior in a DFB fiber laser is investigated. It is shown that not only does the linewidth deviate drastically from the Schawlow-Townes linewidth formula by increasing with pump and laser power, but it also varies significantly ...
Voo, N.Y. +7 more
core +1 more source
Brillouin Backscattering Light Properties of Chaotic Laser Injecting Into an Optical Fiber
IEEE Photonics Journal, 2017 Laser diode-based optical chaos is attractive for the fundamental physics as well as practical tasks in such as secure communications, random number generation, and fiber sensing.
Mingjiang Zhang +4 more
doaj +1 more source
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective Neurochemical levels measured by brain MR spectroscopy (MRS) have been proposed as endpoints for clinical trials in early‐stage spinocerebellar ataxia (SCA) trials. We tested their trial‐readiness by quantifying neurochemicals in three affected brain regions in early‐stage cohorts of SCA2 and SCA3, examining their reproducibility in ...
James M. Joers +19 more
wiley +1 more source
Photonic Terahertz Carrier Generation Using an Optical Feedback Mode-Lock Laser Diode
IEEE Photonics Journal, 2021 A tunable narrow-linewidth photonic terahertz (THz) carrier generation scheme using a distributed-Bragg-reflector-based mode-locked laser diode (MLLD) with optical feedback and mode filtering technique is proposed and experimentally demonstrated ...
Huan Wang +3 more
doaj +1 more source
Advanced Engineering Materials, EarlyView.A distinct semi‐confined inner‐tube chemical vapor deposition geometry enables reproducible, large‐area growth of phase‐pure 2D β′‐In2Se3 from InI + Se precursors. Engineering local vapor transport and optimizing precursor delivery and temperature–time conditions yield uniform continuous films.
Dasun P. W. Guruge +8 more
wiley +1 more source