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Linewidth Measurement of a Narrow-Linewidth Laser: Principles, Methods, and Systems [PDF]

open access: yesSensors
Narrow-linewidth lasers mainly depend on the development of advanced laser linewidth measurement methods for related technological progress as key devices in satellite laser communications, precision measurements, ultra-high-speed optical communications,
Jia-Qi Chen   +7 more
doaj   +5 more sources

Narrow-Linewidth Laser Linewidth Measurement Technology [PDF]

open access: yesFrontiers in Physics, 2021
A narrow-linewidth laser with excellent temporal coherence is an important light source for microphysics, space detection, and high-precision measurement.
Zhenxu Bai   +14 more
doaj   +3 more sources

Comparison of Different Linewidth Measuring Methods for Narrow Linewidth Laser [PDF]

open access: yesSensors, 2022
We experimentally demonstrate a fiber laser with different linewidths based on self-injection locking (SIL) and the stimulated Brillouin scattering effect.
Ziqi Zheng   +9 more
doaj   +4 more sources

Narrow-Linewidth 2 μm All-Fiber Laser Amplifier with a Highly Stable and Precisely Tunable Wavelength for Gas Molecule Absorption in Photonic Crystal Hollow-Core Fibers [PDF]

open access: yesMolecules, 2021
In recent years, mid-infrared fiber lasers based on gas-filled photonic crystal hollow-core fibers (HCFs) have attracted enormous attention. They provide a potential method for the generation of high-power mid-infrared emissions, particularly beyond 4 μm.
Wenxi Pei   +5 more
doaj   +2 more sources

Wavelength-Tunable Narrow-Linewidth Laser Diode Based on Self-Injection Locking with a High-Q Lithium Niobate Microring Resonator [PDF]

open access: yesNanomaterials, 2023
We demonstrate a narrow linewidth 980 nm laser by self-injection locking of an electrically pumped distributed-feedback (DFB) laser diode to a high quality (Q) factor (>105) lithium niobate (LN) microring resonator.
Ting Huang   +11 more
doaj   +2 more sources

Narrow-Linewidth GaN-on-Si Laser Diode with Slot Gratings [PDF]

open access: yesNanomaterials, 2021
This letter reports room-temperature electrically pumped narrow-linewidth GaN-on-Si laser diodes. Unlike conventional distributed Bragg feedback laser diodes with hundreds of gratings, we employed only a few precisely defined slot gratings to narrow the ...
Yongjun Tang   +11 more
doaj   +2 more sources

Narrow Linewidth Half-Open-Cavity Random Laser Assisted by a Three-Grating Ring Resonator for Strain Detection [PDF]

open access: yesSensors, 2022
A stabilized narrow-linewidth random fiber laser for strain detection, based on a three-grating ring (TGR) resonator and half-open-cavity structure, is proposed and investigated experimentally.
Bing Lv   +4 more
doaj   +2 more sources

Impedance self-matching ultra-narrow linewidth fiber resonator by use of a tunable π-phase-shifted FBG [PDF]

open access: yesScientific Reports, 2017
In this paper, we present a novel ultra-narrow linewidth fiber resonator formed by a tunable polarization maintaining (PM) π-phase-shifted fiber Bragg grating and a PM uniform fiber Bragg grating with a certain length of PM single mode fiber patch cable ...
Mingyong Jing   +6 more
doaj   +2 more sources

Noise characteristics of semiconductor lasers with narrow linewidth [PDF]

open access: yesHeliyon
Narrow-linewidth semiconductor lasers are highly valued in scientific research and industrial applications owing to their high coherence and low phase noise characteristics, particularly in high-performance optical communications, sensing, and microwave ...
Hua Wang   +13 more
doaj   +2 more sources

Dual-cavity feedback assisted DFB narrow linewidth laser [PDF]

open access: yesScientific Reports, 2017
Single longitudinal mode (SLM) distributed feedback (DFB) lasers with a linewidth lower than a few kHz find applications in many coherent detection systems.
Shihong Huang   +6 more
doaj   +2 more sources

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