High stability and low noise laser-diode end-pumped Nd: YAG ceramic passively Q-switched laser at 1123 nm based on a Ti3C2Tx-PVA saturable absorber

doi:10.1088/1674-1056/acf495

中国物理B ›› 2023, Vol. 32 ›› Issue (11): 114212-114212.doi: 10.1088/1674-1056/acf495

所属专题： SPECIAL TOPIC — Celebrating the 100th Anniversary of Physics Discipline of Northwest University

High stability and low noise laser-diode end-pumped Nd: YAG ceramic passively Q-switched laser at 1123 nm based on a Ti₃C₂T_x-PVA saturable absorber

Jia-Le Yan(闫佳乐)¹, Ben Li(李奔)¹, Guo-Zhen Wang(王国珍)¹, Shun-Yu Yang(杨顺宇)¹, Bao-Le Lu(陆宝乐)^1,2, and Yang Bai(白杨)^1,2,†

1 Institute of Photonics & Photon-Technology, Northwest University, Xi'an 710127, China;
2 Shaanxi Engineering Technology Research Center for Solid State Lasers and Application, Xi'an 710127, China

收稿日期:2023-07-03 修回日期:2023-08-28 接受日期:2023-08-29 出版日期:2023-10-16 发布日期:2023-10-31
通讯作者: Yang Bai E-mail:by@nwu.edu.cn
基金资助:
Project supported by the Serving Local Special Project of Shaanxi Provincial Department of Education of China (Grant No. 19JC040) and the National Natural Science Foundation of China (Grant No. 61905193).

High stability and low noise laser-diode end-pumped Nd: YAG ceramic passively Q-switched laser at 1123 nm based on a Ti₃C₂T_x-PVA saturable absorber

Jia-Le Yan(闫佳乐)¹, Ben Li(李奔)¹, Guo-Zhen Wang(王国珍)¹, Shun-Yu Yang(杨顺宇)¹, Bao-Le Lu(陆宝乐)^1,2, and Yang Bai(白杨)^1,2,†

1 Institute of Photonics & Photon-Technology, Northwest University, Xi'an 710127, China;
2 Shaanxi Engineering Technology Research Center for Solid State Lasers and Application, Xi'an 710127, China

Received:2023-07-03 Revised:2023-08-28 Accepted:2023-08-29 Online:2023-10-16 Published:2023-10-31
Contact: Yang Bai E-mail:by@nwu.edu.cn
Supported by:
Project supported by the Serving Local Special Project of Shaanxi Provincial Department of Education of China (Grant No. 19JC040) and the National Natural Science Foundation of China (Grant No. 61905193).

摘要/Abstract

摘要： We report a high repetition frequency, high power stability and low laser noise laser-diode (LD) end-pumped Nd: YAG ceramic passively Q-switched laser at 1123 nm based on a Ti₃C₂T_x-polyvinyl alcohol (PVA) film as a saturable absorber (SA). A Brewster polarizer (BP) and a birefringent crystal (BC) are incorporated to enable frequency selection and filtering for the passively Q-switched 1123 nm pulsed laser to improve the power stability and reduce the noise. When the pump power is 5.1 W, an average output power of 457.9 mW is obtained, corresponding to a repetition frequency of 1.09 MHz, a pulse width of 56 ns, a spectral line width of 0.65 nm, a power instability of ± 0.92%, and a laser noise of 0.89%. The successful implementation of the “Ti₃C₂T_x-PVA film passively Q-switching” combined with “frequency selection and filtering of m BP + BC” technology path provides a valuable reference for developing pulsed laser with high repetition frequency, high stability and low noise.

关键词: passively Q-switched, pulsed laser at 1123 nm, Ti₃C₂T_x-PVA film, frequency selection and filtering of Brewster polarizer (BP) and birefringent crystal (BC)

Abstract: We report a high repetition frequency, high power stability and low laser noise laser-diode (LD) end-pumped Nd: YAG ceramic passively Q-switched laser at 1123 nm based on a Ti₃C₂T_x-polyvinyl alcohol (PVA) film as a saturable absorber (SA). A Brewster polarizer (BP) and a birefringent crystal (BC) are incorporated to enable frequency selection and filtering for the passively Q-switched 1123 nm pulsed laser to improve the power stability and reduce the noise. When the pump power is 5.1 W, an average output power of 457.9 mW is obtained, corresponding to a repetition frequency of 1.09 MHz, a pulse width of 56 ns, a spectral line width of 0.65 nm, a power instability of ± 0.92%, and a laser noise of 0.89%. The successful implementation of the “Ti₃C₂T_x-PVA film passively Q-switching” combined with “frequency selection and filtering of m BP + BC” technology path provides a valuable reference for developing pulsed laser with high repetition frequency, high stability and low noise.

Key words: passively Q-switched, pulsed laser at 1123 nm, Ti₃C₂T_x-PVA film, frequency selection and filtering of Brewster polarizer (BP) and birefringent crystal (BC)

中图分类号: (Diode-pumped lasers)

42.55.Xi

42.60.Gd (Q-switching) 42.60.Lh (Efficiency, stability, gain, and other operational parameters)

Jia-Le Yan(闫佳乐), Ben Li(李奔), Guo-Zhen Wang(王国珍), Shun-Yu Yang(杨顺宇), Bao-Le Lu(陆宝乐), and Yang Bai(白杨). High stability and low noise laser-diode end-pumped Nd: YAG ceramic passively Q-switched laser at 1123 nm based on a Ti₃C₂T_x-PVA saturable absorber[J]. 中国物理B, 2023, 32(11): 114212-114212.

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High stability and low noise laser-diode end-pumped Nd: YAG ceramic passively Q-switched laser at 1123 nm based on a Ti₃C₂T_x-PVA saturable absorber

High stability and low noise laser-diode end-pumped Nd: YAG ceramic passively Q-switched laser at 1123 nm based on a Ti₃C₂T_x-PVA saturable absorber

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