基于少层Ti_(3)C_(2)T_(x)被动调Q激光器研究  

Research on passive Q-switched lasers basedon few-layer Ti_(3)C_(2)T_(x)

作　　者：井志远 高兰兰[1] 丛帅 高万雨 JING Zhi-yuan;GAO Lan-lan;CONG Shuai;GAO Wan-yu(School of Science,Changchun University of Science and Technology,Changchun 130022,China)

机构地区：[1]长春理工大学物理学院,吉林长春130022

出　　处：《激光与红外》2025年第2期179-184,共6页Laser & Infrared

摘　　要：调Q激光器在激光材料加工、激光测距、激光雷达等领域应用广泛。本文利用液相剥离法制备少层Ti_(3)C_(2)T_(x)纳米片可饱和吸收体,借助扫描电镜、透射电镜等仪器对少层Ti_(3)C_(2)T_(x)纳米片的表面形貌、物相组成、厚度进行了表征分析。其次利用少层Ti_(3)C_(2)T_(x)比色皿作为调Q器件插入Nd∶YVO_(4)激光器的谐振腔中,调节优化之后实现了Nd∶YVO_(4)激光器1064 nm和1342 nm被动调Q脉冲输出;在1064 nm波长下,平均输出功率达217 mW,宽度为140 ns,重复频率为235.8 kHz。在1342 nm波长下,平均输出功率为138 mW,脉冲宽度为170ns,重复频率为191.9 kHz。最后分析了Ti_(3)C_(2)T_(x)被动调Q1064 nm和1342 nm调Q脉冲区别的原因。The Q-switched laser is extensively applied in fields such as laser material processing,laser ranging,and lidar.In this article,the few-layer Ti_(3)C_(2)T_(x)nanosheet saturable absorbers were fabricated by the liquid-phase exfoliation method.The surface morphology,phase composition,and thickness of the few-layer Ti_(3)C_(2)T_(x)nanosheets were characterized and analyzed with scanning electron microscopy and transmission electron microscopy.Subsequently,the few-layer Ti_(3)C_(2)T_(x)cuvette was employed as the Q-switching device and inserted into the resonant cavity of the Nd∶YVO_(4)laser.After adjustment and optimization,passive Q-switched pulsed outputs of the Nd∶YVO_(4)laser at 1064 nm and 1342 nm were achieved respectively.At the 1064 nm wavelength,the average output power reached 217 mW,the pulse width was 140 ns,and the repetition frequency was 235.8 kHz.At the 1342 nm wavelength,the average output power was 138 mW,the pulse width was 170 ns,and the repetition frequency was 191.9 kHz.Finally,the reasons for the distinctions between the passive Q-switched 1064 nm and 1342 nm Q-switched pulses of Ti_(3)C_(2)T_(x)were analyzed.

关 键 词：少层Ti_(3)C_(2)T_(x)分散液 可饱和吸收体 被动调Q 全固态激光器 

分 类 号：TN248.1[电子电信—物理电子学]