Angular filtering by volume Bragg grating in photothermorefractive glass for nanosecond laser pulse

被引：0
|
作者：
熊宝星 [1 ,2 ,3 ]
高帆 [1 ,2 ,3 ]
张翔 [1 ,2 ,3 ]
袁孝 [1 ,2 ,3 ]
机构：
[1] School of Optoelectronic Science and Engineering, Soochow University
[2] Jiangsu Provincial Key Laboratory of Advanced Optical Manufacturing Technologies and Key Laboratory of Modern Optical Technologies of the Ministry of Education
[3] Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University
来源：
Chinese Optics Letters | 2019年 / 17卷 / 04期
基金：
国家重点研发计划; 中国国家自然科学基金;
关键词：
D O I：
暂无
中图分类号：
TN24 [激光技术、微波激射技术]; TN713 [滤波技术、滤波器];
学科分类号：
摘要：
The two-dimensional angular filter based on volume Bragg gratings in photothermorefractive glass for a nanosecond(ns) laser pulse is demonstrated. The experimental results show that the near-field beam quality of the laser pulse was effectively improved. The near-field modulation and contrast ratio were improved by 1.75 and4.48 times, respectively. The power spectral density curves showed that the spatial frequencies more than0.9 mm-1in the x direction and 1.2 mm-1in the y direction were effectively suppressed.
引用
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页码：19 / 22
页数：4
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