LD端面抽运Z型腔的Nd:GdVO4激光器稳定性研究
Stability of LD end-pumped Z-cavity Nd:GdVO4 laser
李奇楠 1李栋燕 1于海平 1罗小洁 1丁状 1向万贵1
作者信息
- 1. 齐齐哈尔大学 理学院,齐齐哈尔 161006,中国
- 折叠
摘要
为了提升半导体激光二极管端面抽运Z型腔固体激光器的稳定性,以Nd:GdVO4固体激光器为例,采用数值模拟的方法,在考虑晶体热透镜效应的情况下,研究了Z型谐振腔的臂长、镜片曲率半径等参数对高斯光束的影响,得到了晶体热透镜焦距随抽运光功率变化的关系曲线、谐振腔稳定性随热透镜焦距变化的关系曲线、以及高斯光束束腰半径随谐振腔分臂长和镜片曲率半径变化的关系曲线,并绘制了高斯光束的轮廓曲线.结果表明,适当选取Z型腔的分臂参数可在晶体主平面和后端镜处获得较小的束腰尺寸.本研究结果可对Z型固体激光器谐振腔的搭建提供理论参考及依据.
Abstract
In order to improve the stability of laser diode(LD)end-pumped Z-cavity solid-state lasers,take Nd:GdVO4 solid-state laser as an example.The influence of parameters like arm length and radius of curvature of the lens of the Z-shaped resonant cavity on the Gaussian beam was studied by numerical simulation,while considering the crystal thermal lensing effect.The relationship curves of the focal length of the crystal thermal lens with the variation of the pump power,the relationship curves of the stability of the resonant cavity with the variation of the focal length of the thermal lens,and the relationship curves of the Gaussian beam waist radius with the variation of the resonant cavity split arm length and the lens radius of curvature were obtained.The profile curves of the Gaussian beam were plotted.The results indicate that a suitable selection of the split-arm parameters of the Z-cavity can obtain a smaller beam waist size at the main plane of the crystal and the rear-end mirror,and the results of this study can provide a theoretical reference and basis for the construction of resonant cavities of Z-type solid-state lasers.
关键词
激光器/束腰半径/数值模拟/Z型腔Key words
lasers/beam radius/numerical simulation/Z-cavity引用本文复制引用
基金项目
黑龙江省农业多维传感器信息感知工程技术研究中心开放课题(DWCGQKF202104)
出版年
2024
国家科技期刊平台
NSTL
万方数据