Active and passive Q-switching operation of 1 μm Yb:YSP laser with an optical chopper/AOM and MoWS2 nanosheets. (1st December 2022)

• Record Type: Journal Article
• Authors: Yin, Xiaoqin; Fan, Shuzhen; Zhang, Xingyu; Wu, Guangda; Yu, Fapeng
• Is Part Of: Laser physics. Volume 32:Number 12(2022)
• Publication Date: 2022-12-01
• Subjects: Yb:YSP laser -- Q-switching -- MoWS2 nanosheets -- 1 μm waveband; Lasers -- Periodicals; 621.36605
• DOI: 10.1088/1555-6611/ac996e
• Languages: English
• ISSNs: 1054-660X

Abstract

Abstract: In this paper, the laser diode (LD)-pumped all-solid-state Yb:YSr3 (PO4 )3 (Yb:YSP) lasers with active and passive Q-switching operation were demonstrated for the first time. At the pump power of 5.5 W, the average output power was 369 mW and the single pulse energy was 184.5 μ J at 2 kHz in the active Q-switching operation with an optical chopper. For the acousto-optic modulator Q-switched laser, a 118 ns pulse duration and 2881 W pulse peak power at 0.5 kHz were obtained. Furthermore, MoWS2 nanosheets were implemented to the passively Q-switched Yb:YSP laser, generating stable pulses with duration of 1.45 μ s at the repetition frequency of 55 kHz and verifying the optical response potential of MoWS2 . The good laser beam quality of M x 2 = 1.14 and M y 2 = 1.12 were achieved as well.