热化对无源 Q 开关 IC-OPO 性能的影响

IF 1.9 3区物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY

Frontiers in Physics Pub Date : 2024-07-16 DOI:10.3389/fphy.2024.1428671

Josh Kneller, S. Salimian Rizi, Liam Flannigan, Chang-qing Xu

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引用次数: 0

摘要

本文报告了使用 Cr:YAG 作为 Q 开关晶体的无源 Q 开关腔内光参量振荡器 (IC-OPO) 的新模型。该模型考虑了 Nd:YAG 激光晶体中的热化效应、Cr:YAG 可饱和吸收体中的激发态吸收、非线性晶体中泵浦耗尽导致的非线性损耗、热透镜效应以及非线性晶体内场的模式重叠。计算得出的 1,064 nm 泵浦光脉冲宽度为 6.2 ns，而实验结果为 6 ns；计算得出的信号波脉冲宽度为 1.75 ns，而实验结果为 2 ns。据我们所知，该模型能准确计算 IC-OPO 的时间和输出功率特性，这在以前的研究中从未报道过。

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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The effects of thermalization on the performance of passively Q-switched IC-OPOs

In this paper, we report a new model for passively Q-switched intracavity optical parametric oscillators (IC-OPOs), using Cr:YAG as a Q-switch crystal. The model considers the effects of thermalization in the Nd:YAG laser crystal, excited state absorption in the Cr:YAG saturable absorber, nonlinear loss due to pump depletion in the nonlinear crystal, the thermal lens effect and the mode overlap of the fields within the nonlinear crystal. The calculated pulse width for the 1,064 nm pump light was 6.2 ns compared to the experimental result of 6 ns, while the signal wave was calculated to have a pulse width of 1.75 ns compared to the experimental result of 2 ns. The model is shown to accurately calculate both the temporal and output power characteristics of the IC-OPO, which has not been previously reported to the best of our knowledge.

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来源期刊

Frontiers in Physics Mathematics-Mathematical Physics

CiteScore

4.50

自引率

6.50%

发文量

1215

审稿时长

12 weeks

期刊介绍： Frontiers in Physics publishes rigorously peer-reviewed research across the entire field, from experimental, to computational and theoretical physics. This multidisciplinary open-access journal is at the forefront of disseminating and communicating scientific knowledge and impactful discoveries to researchers, academics, engineers and the public worldwide.