Meng Yao, Liu Yizhou, Li Tao, Feng Tianli, Huang Jiacheng, Ni Zheng, Qiao Wenchao
School of Information Science and Engineering, Shandong University, Qingdao 266237, China.
Shandong Provincial Key Laboratory of Laser Technology and Application, Shandong University, Qingdao 266237, China.
Molecules. 2022 Jan 24;27(3):759. doi: 10.3390/molecules27030759.
We report the surface morphology and the nonlinear absorption characteristics of MXene VCrC nanosheets prepared by the liquid-phase exfoliation method. The self-made MXene VCrC was applied as a saturable absorber in the Tm:YAP laser experiments, performing excellent Q-switching optical modulation characteristics in infrared range. With this absorber, a stable passively Q-switched 2 μm laser was achieved. Under an incident pump power of 3.52 W, a maximum output power of 280 mW was obtained with a T = 3% output coupler at a repetition frequency of 49 kHz. The corresponding pulse energy and peak power were 5.7 μJ and 6.6 W, respectively. The shortest pulse duration was 658 ns at the repetition rate of 63 kHz with a T = 1% output coupler.
我们报道了通过液相剥离法制备的MXene VCrC纳米片的表面形貌和非线性吸收特性。自制的MXene VCrC在Tm:YAP激光器实验中用作可饱和吸收体，在红外波段表现出优异的调Q光调制特性。使用这种吸收体，实现了稳定的被动调Q 2μm激光器。在3.52W的入射泵浦功率下，使用T = 3%的输出耦合器，在49kHz的重复频率下获得了280mW的最大输出功率。相应的脉冲能量和峰值功率分别为5.7μJ和6.6W。在63kHz的重复频率下，使用T = 1%的输出耦合器，最短脉冲持续时间为658ns。
