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一种线偏振波长可调谐的 Q 开关光纤激光器，其光谱带宽为 112MHz。

A Linearly Polarized Wavelength-Tunable Q-Switched Fiber Laser with a Narrow Spectral Bandwidth of 112 MHz.

机构信息

Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China.

School of Physics and Optoelectronic Engineering, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China.

出版信息

Sensors (Basel). 2023 May 27;23(11):5128. doi: 10.3390/s23115128.

DOI:10.3390/s23115128
PMID:37299855
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10255775/
Abstract

A tunable and narrow-bandwidth Q-switched ytterbium-doped fiber (YDF) laser is investigated in this paper. The non-pumped YDF acts as a saturable absorber and, together with a Sagnac loop mirror, provides a dynamic spectral-filtering grating to achieve a narrow-linewidth Q-switched output. By adjusting an etalon-based tunable fiber filter, a tunable wavelength from 1027 nm to 1033 nm is obtained. When the pump power is 1.75 W, the Q-switched laser pulses with a pulse energy of 10.45 nJ, and a repetition frequency of 11.98 kHz and spectral linewidth of 112 MHz are obtained. This work paves the way for the generation narrow-linewidth Q-switched lasers with tunable wavelengths in conventional ytterbium, erbium, and thulium fiber bands to address critical applications such as coherent detection, biomedicine, and nonlinear frequency conversion.

摘要

本文研究了一种可调谐、窄线宽的掺镱光纤（YDF）激光器。未泵浦的 YDF 用作可饱和吸收体，与萨格纳克环镜一起构成动态光谱滤波光栅，实现窄线宽 Q 开关输出。通过调整基于法布里-珀罗标准具的可调谐光纤滤波器，获得了从 1027nm 到 1033nm 的可调谐波长。当泵浦功率为 1.75W 时，获得了脉冲能量为 10.45nJ、重复频率为 11.98kHz 和光谱线宽为 112MHz 的 Q 开关激光脉冲。这项工作为在传统的掺镱、掺铒和掺铥光纤波段中产生具有可调谐波长的窄线宽 Q 开关激光器铺平了道路，以满足相干检测、生物医学和非线性频率转换等关键应用的需求。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a7fe/10255775/f480a45371db/sensors-23-05128-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a7fe/10255775/2c2afc25e651/sensors-23-05128-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a7fe/10255775/50a10b520cdb/sensors-23-05128-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a7fe/10255775/ab9292406e46/sensors-23-05128-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a7fe/10255775/f949b8455f00/sensors-23-05128-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a7fe/10255775/6c78df2b1504/sensors-23-05128-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a7fe/10255775/f480a45371db/sensors-23-05128-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a7fe/10255775/2c2afc25e651/sensors-23-05128-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a7fe/10255775/50a10b520cdb/sensors-23-05128-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a7fe/10255775/ab9292406e46/sensors-23-05128-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a7fe/10255775/f949b8455f00/sensors-23-05128-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a7fe/10255775/6c78df2b1504/sensors-23-05128-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a7fe/10255775/f480a45371db/sensors-23-05128-g006.jpg

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本文引用的文献

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Single-frequency 1.7-μm Tm-doped fiber laser with optical bistability of both power and longitudinal mode behavior.具有功率和纵向模式行为双稳性的单频1.7微米掺铥光纤激光器。
Opt Express. 2021 Jul 5;29(14):21409-21417. doi: 10.1364/OE.424336.
2
Narrow-bandwidth actively Q-switched all-fiber laser by suppressing ASE gain self-saturation.通过抑制放大自发辐射（ASE）增益自饱和实现的窄带宽主动调Q全光纤激光器。
Opt Express. 2019 Sep 16;27(19):27345-27353. doi: 10.1364/OE.27.027345.
3
Narrow-linewidth broadly tunable Yb-doped Q-switched fiber laser using multimode interference filter.
采用多模干涉滤波器的窄线宽宽调谐掺镱调Q光纤激光器
Appl Opt. 2017 May 1;56(13):3783-3788. doi: 10.1364/AO.56.003783.
4
6 mJ, high-average-power, all-fiberized Q-switched fiber master oscillator power amplifier with low repetition rate.6毫焦、高平均功率、全光纤化、低重复频率的调Q光纤主振荡功率放大器
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Nonlinear-optical loop mirror.非线性光学环形镜
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6
C-band wavelength-swept single-longitudinalmode erbium-doped fiber ring laser.C波段波长扫描单纵模掺铒光纤环形激光器。
Opt Express. 2008 Sep 1;16(18):14173-9. doi: 10.1364/oe.16.014173.
7
Single-frequency terahertz source pumped by Q-switched fiber lasers based on difference-frequency generation in GaSe crystal.基于GaSe晶体中的差频产生，由调Q光纤激光器泵浦的单频太赫兹源。
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