Property of laser beam propagating through cylinder-lens spatial filter in high power laser
-
摘要: 为了解决空间滤波器滤波针孔堵孔问题，提出了一种新型柱面镜空间滤波器，新型柱面镜空间滤波器由柱面镜和狭缝构成。利用线性传输理论，对高功率激光束在新型柱面镜空间滤波器中的传输特性进行了数值模拟。结果表明：新型柱面镜空间滤波器的焦斑面积比传统滤波器大，而焦斑功率密度较小；新型柱面镜空间滤波器的滤波效果与传统滤波器相同，近场均匀性也相同。因此新型柱面镜空间滤波器能够抑制空间滤波器堵孔效应，可以缩短空间滤波器系统透镜焦距，从而提高功率装置的整体性价比。由此，采用新型柱面镜空间滤波器替换传统球面镜空间滤波器具有可行性。Abstract: A new cylindrical-lens spatial filter is proposed to solve the blocking pinhole problem of a spatial filter. Compared with the conventional spherical-lens spatial filter, the new filter is constituted with cylindrical lens and slit. The transmission characteristics of high power laser beam in the new cylindrical-lens spatial filter are simulated using linear transfer theory. The results show that the area of the focal spot of the new filter is bigger than that of the conventional spherical-lens spatial filter, and the power density of the focal spot is smaller, while the filtering effect and near field uniformity keep the same. The new filter can effectively inhibit the blocking effect of the filtering pinhole. At the same time, the new filter can also improve the overall price of the laser device by shortening the focal length of lens. The new cylindrical-lens spatial filter to replace the conventional spherical-lens spatial filter is feasible.
期刊类型引用(5)
1. 蒋琳，刘军，袁晓蓉，张浩，李春领，蔡光明. 薄片激光器低畸变冷却技术研究. 中国激光. 2021(03): 7-13 . 
百度学术2. 郭嘉伟，贾凯，杨峰，彭春，汪晓聪，刘晓旭，韩聚洪，荣克鹏，安国斐，蔡和，王浟. 喷流冷却复合陶瓷薄片激光器的热特性仿真分析及实验研究（英文）. 光子学报. 2020(03): 7-15 . 百度学术3. 李国会，徐宏来，吴晶，杜应磊，向汝建，周志强，于益，胡平，向振佼，张越. 非稳腔薄片激光器腔内像差组合式主动校正技术. 中国激光. 2020(10): 30-37 . 百度学术4. 李隆，潘晓瑞，耿鹰鸽. LD端面抽运Nd:YAG微片热容激光器温度场. 激光与光电子学进展. 2017(12): 261-270 . 百度学术5. 邵娜，朱晓，朱广志，王牧，冯玙璠，黄彦. 碟片激光器晶体模块阵列射流冲击冷却的研究. 激光技术. 2016(05): 695-700 . 百度学术其他类型引用(2)
-
点击查看大图
计量
- 文章访问数: 1298
- HTML全文浏览量: 176
- PDF下载量: 371
- 被引次数: 7
下载:
