Output characteristics of an actively Q-switched Tm:GdScO3 slab laser at 2 μm band

IF 2.6 3区物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY

Physica Scripta Pub Date : 2024-09-11 DOI:10.1088/1402-4896/ad770c

Jing Liu, Shanming Li, Yuqing Fan, Chuanpeng Qian, Ke Yang, Ting Yu, Chengchun Zhao, Xiangchun Shi, Yin Hang and Xisheng Ye

引用次数: 0

Abstract

An acousto-optic Q-switched Tm:GdScO3 slab laser at different pulse repetition frequencies was successfully demonstrated for the first time. The size of a slab crystal doped with a 2 at% Tm3+ is 2 mm × 4 mm × 20 mm. With the pump power of 33 W, a maximum average output power of 3.03 W was obtained with center wavelength of 1980 nm at pulse repetition frequency of 20 kHz. The optical-to-optical conversion efficiency and slope efficiency were 9.18% and 16.66%, respectively. The maximum pulse energy was 0.60 mJ with pulse width of 160 ns at 1 kHz, corresponding to the peak power of 3.75 kW. In addition, at the pump power of 33 W, the beam quality factors M2 for horizontal and vertical directions were 1.33 and 1.08, respectively.

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2 μm 波段主动 Q 开关 Tm:GdScO3 板式激光器的输出特性

首次成功演示了不同脉冲重复频率的声光 Q 开关 Tm:GdScO3 板式激光器。掺杂了 2 at% Tm3+ 的板状晶体尺寸为 2 mm × 4 mm × 20 mm。在泵浦功率为 33 W、中心波长为 1980 nm、脉冲重复频率为 20 kHz 的条件下，获得了 3.03 W 的最大平均输出功率。光-光转换效率和斜率效率分别为 9.18% 和 16.66%。最大脉冲能量为 0.60 mJ，脉冲宽度为 160 ns，频率为 1 kHz，峰值功率为 3.75 kW。此外，在泵功率为 33 W 时，水平和垂直方向的光束质量因子 M2 分别为 1.33 和 1.08。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Physica Scripta 物理-物理：综合

CiteScore

3.70

自引率

3.40%

发文量

782

审稿时长

4.5 months

期刊介绍： Physica Scripta is an international journal for original research in any branch of experimental and theoretical physics. Articles will be considered in any of the following topics, and interdisciplinary topics involving physics are also welcomed: -Atomic, molecular and optical physics- Plasma physics- Condensed matter physics- Mathematical physics- Astrophysics- High energy physics- Nuclear physics- Nonlinear physics. The journal aims to increase the visibility and accessibility of research to the wider physical sciences community. Articles on topics of broad interest are encouraged and submissions in more specialist fields should endeavour to include reference to the wider context of their research in the introduction.