High stability and low noise laser-diode end-pumped Nd:YAG ceramic passively Q-switched laser at 1123 nm based on a Ti_(3)C_(2)T_(x)-PVA saturable absorber  

作　　者：闫佳乐 李奔 王国珍 杨顺宇 陆宝乐 白杨 Jia-Le Yan;Ben Li;Guo-Zhen Wang;Shun-Yu Yang;Bao-Le Lu;Yang Bai(Institute of Photonics&Photon-Technology,Northwest University,Xi’an 710127,China;Shaanxi Engineering Technology Research Center for Solid State Lasers and Application,Xi’an 710127,China)

机构地区：[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

出　　处：《Chinese Physics B》2023年第11期47-55,共9页中国物理B(英文版)

基　　金：Project supported by the Serving Local Special Project of Shaanxi Provincial Department of Education of China (Grant No. 19JC040);the National Natural Science Foundation of China (Grant No. 61905193)。

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 Ti_(3)C_(2)T_(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 m W 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 “Ti_(3)C_(2)T_(x)-PVA film passively Q-switching” combined with “frequency selection and filtering of 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 Ti3C2Tx-PVA film frequency selection and filter-ing of Brewster polarizer(BP)and birefringent crystal(BC) 

分 类 号：TN248[电子电信—物理电子学]