Passively Q-switched operation of a 1.94μm thulium-doped solid-state laser based on MXeneV_(2)CT_(x)  

作　　者：袁晋鹤 李佳睿 吴政阳 李双成 韩杰 李林军 Jinhe Yuan;Jiarui Li;Zhengyang Wu;Shuangcheng Li;Jie Han;Linjun Li(College of Physical Science and Technology,Heilongjiang University,Harbin 150080,China;Heilongjiang Provincial Key Laboratory of Laser Spectroscopy Technology and Application,Harbin University of Science and Technology,Harbin 150080,China;School of Data Science and Technology,Heilongjiang University,Harbin 150080,China)

机构地区：[1]College of Physical Science and Technology,Heilongjiang University,Harbin 150080,China [2]Heilongjiang Provincial Key Laboratory of Laser Spectroscopy Technology and Application,Harbin University of Science and Technology,Harbin 150080,China [3]School of Data Science and Technology,Heilongjiang University,Harbin 150080,China

出　　处：《Chinese Optics Letters》2023年第2期40-44,共5页中国光学快报（英文版）

基　　金：supported by the China Postdoctoral Science Foundation(No.2020M670937);the Basic Scientific Research Business Expenses of Colleges and Universities in Heilongjiang Province(No.2021-KYYWF-0020)。

摘　　要：MXene V_(2)CT_(x) has great practicability because it is not easy to degrade under ambient conditions.In this paper,a V_(2)CT_(x) saturable absorber(SA)was firstly applied to a passively Q-switched(PQS)laser,to the best of our knowledge.The V_(2)CT_(x)-SA was prepared by the spin-coating method.The linear absorption of the V_(2)CT_(x)-SA in the 1000-2200 nm region and the nonlinear absorption near 2μm were studied.With the V_(2)CT_(x)-SA,a typical PQS operation at 1.94μm was realized in a Tm:YAlO3laser.The minimum pulse width produced by the PQS laser was 528 ns,and the peak power,repetition rate,and average output power were 10.06 W,65.9 kHz,and 350 mW,respectively.Meanwhile,the maximum pulse energy was 6.33μJ.This work demonstrates that the V_(2)CT_(x) can be used as an effective SA to obtain nanosecond pulses with high peak power and high repetition rate simultaneously.

关 键 词：passive Q-switching MXene V2CTx saturable absorber thulium doping 

分 类 号：TN248.1[电子电信—物理电子学]