光子上转换
激光器
光学
脉冲宽度调制
速率方程
Q开关
人口倒转
材料科学
功率密度
二极管
脉搏(音乐)
连续波
Crystal(编程语言)
功率(物理)
原子物理学
物理
光电子学
探测器
动力学
量子力学
程序设计语言
计算机科学
作者
Lei Guo,Yaling Yang,Ruihua Wang,Baitao Zhang,Tao Li,Shengzhi Zhao,Jingliang He,Kejian Yang
出处
期刊:Molecules
[MDPI AG]
日期:2021-12-02
卷期号:26 (23): 7324-7324
标识
DOI:10.3390/molecules26237324
摘要
We report the characteristics of a diode-end-pumped, high-repetition-rate, acoustic-optic (AO) Q-switched Tm:YLF laser operating from 5 kHz to 10 kHz. In the continuous-wave (CW) regime, a maximum average output power of 8.5 W was obtained with a slope efficiency of 30.7%. Under the AO Q-switching regime, a maximum output power of 7.32 W was obtained at a repetition frequency of 5 kHz with a pulse width of 68 ns and a pulse energy of 1.4 mJ, corresponding to a peak power of 21.5 kW. A time-dependent rate equation model is introduced to theoretically analyze the results obtained in the experiment, in which the cross-relaxation phenomenon, upconversion losses and ground-state depletion are taken into account. Additionally, the evolution processes of population inversion density and intracavity photon number density with time are also presented. The theoretical results well predict the dependence of laser output characteristics of Tm:YLF crystal on the incident pump powers.
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