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Updated: Jun 24, 2025

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高峰功率长波红外线BaGa₄Se₇光学参数振荡器,具有6.7-13.9微米的广泛调节范围

Yu Liu, Zhiyong Li, Jiyong Yao

|June 2, 2024

概括

这项研究展示了一种高峰功率,可调节的长波红外光学参数振荡器 (OPO),使用一种新的BaGa4Se7晶体. 该设备实现了0.15MW的峰值功率和从6.7到13.9微米的广泛调范围.

科学领域:

光学和光子学在光学和光子学.
材料科学材料科学材料科学
激光物理激光物理

背景情况:

光学参数振荡器 (OPO) 对于产生可调节的激光光是至关重要的.
在长波红外 (LWIR) 频谱中开发高效的OPO仍然具有挑战性.
化 (BaGa4Se7或BGSe) 是用于红外应用的有前途的非线性晶体.

研究的目的:

为了展示一个高峰功率,广泛调节的LWIR OPO.
在OPO设置中研究BaGa4Se7 (BGSe) 晶体的性能.
分析光束质量特征,了解影响光束质量的因素.

主要方法:

使用了一个BaGa4Se7 (BGSe) 非线性晶体.
使用 1064 nm Nd:YAG 激光来抽取 OPO.
特征输出功率,波长调节范围,脉冲宽度和光束质量 (M2).
进行理论分析以解释光束质量改进.

主要成果:

在9.8μm时达到0.15MW的高峰功率,脉冲宽度为5.0ns.
通过旋转BGSe晶体,证明了从6.7μm到13.9μm的广泛调范围.
在11.0μm获得良好的光束质量 (M2x=4.1,M2y=3.3).

结论:

BaGa4Se7 (BGSe) 晶体可以实现高性能LWIR OPO生成.
开发的OPO为红外应用提供了广泛的调范围和高峰功率.
理论分析提供了对光束质量增强机制的见解.

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