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

英文篇名：Angular filtering by volume Bragg grating in photothermorefractive glass for nanosecond laser pulse
作者：熊宝星 ; 高帆 ; 张翔 ; 袁孝
英文作者：Baoxing Xiong;Fan Gao;Xiang Zhang;Xiao Yuan;School of Optoelectronic Science and Engineering, Soochow University;Jiangsu Provincial Key Laboratory of Advanced Optical Manufacturing Technologies and Key Laboratory of Modern Optical Technologies of the Ministry of Education;Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University;
中文刊名：GXKB
英文刊名：中国光学快报(英文版)
机构：School of Optoelectronic Science and Engineering, Soochow University;Jiangsu Provincial Key Laboratory of Advanced Optical Manufacturing Technologies and Key Laboratory of Modern Optical Technologies of the Ministry of Education;Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University;
出版日期：2019-04-25
出版单位：Chinese Optics Letters
年：2019
期：v.17
基金：supported by the National Key R&D Program of China(No.2016YFF0100900);; the National Natural Science Foundation of China(NSFC)(Nos.61775153,61705153,and 11504255);; the Natural Science Foundation of Jiangsu Province(No.BK20141232);; the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD)
语种：英文;
页：GXKB201904004
页数：4
CN：04
ISSN：31-1890/O4
分类号：19-22

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~(-1)in the x direction and 1.2 mm~(-1)in the y direction were effectively suppressed.
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~(-1)in the x direction and 1.2 mm~(-1)in the y direction were effectively suppressed.

引文

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