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

被引：2

作者：

Zhu, Chengjie ^{[1
,2
]}

Yang, Xuezong ^{[2
]}

Liu, Yuxuan ^{[1
,2
]}

Li, Muye ^{[2
]}

Sun, Yuxiang ^{[2
]}

You, Wei ^{[1
,2
]}

Dong, Peng ^{[3
]}

Chen, Dijun ^{[1
,2
]}

Feng, Yan ^{[1
,2
]}

Chen, Weibiao ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Shanghai 201800, Peoples R China

[2] Univ Chinese Acad Sci, Hangzhou Inst Adv Study, Sch Phys & Optoelect Engn, Hangzhou 310024, Peoples R China

[3] Univ Chinese Acad Sci, Hangzhou Inst Adv Study, Sch Fundamental Phys & Math Sci, Key Lab Gravitat Wave Precis Measurement Zhejiang, Hangzhou 310024, Peoples R China

来源：

SENSORS | 2023年 / 23卷 / 11期

基金：

中国国家自然科学基金;

关键词：

fiber laser; Q-switched fiber laser; saturable dynamic induction grating; narrow bandwidth; tunable wavelength; GENERATION; POWER;

D O I：

10.3390/s23115128

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

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.

引用

页数：8

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