Effect of γ-ray irradiation on the optical property and laser damage performance of silica

被引：8
作者：
Zhong, Mian [1 ]
Yang, Guixia [2 ]
Yan, Zhonghua [1 ]
Yang, Liang [1 ]
Xiang, Xia [1 ]
机构：
[1] Univ Elect Sci & Technol China, Sch Phys Elect, 4 Sect 2 North Jianshe Rd, Chengdu 610054, Sichuan Provinc, Peoples R China
[2] China Acad Engn Phys, Inst Nucl Phys & Chem, Mianyang 621900, Peoples R China
来源：
OPTIK | 2016年 / 127卷 / 08期
关键词：
gamma-Ray; Fused silica; E ' center; LIDT; EV PHOTOLUMINESCENCE BANDS; FUSED-SILICA; ABSORPTION; CENTERS; DEFECTS; GENERATION; BEHAVIOR; QUARTZ; SIO2;
D O I：
10.1016/j.ijleo.2016.01.065
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
High purity fused silica samples have been irradiated by Co-60 gamma-ray at the doses of 50, 500 and 5000 kGy, and the effect of gamma-ray irradiation on the optical property and laser damage performance of silica have been investigated. After gamma-ray irradiation, there is no obvious change on the surface of silica observed. However, the surface roughness increases slightly with increasing gamma-ray irradiation dose. When the irradiation dose reached 500 kGy and above, a broad absorption band at 215 nm, ascribed to E' color center, is significantly observed and its intensity increases greatly with increasing dose. After laser irradiation, the distribution of laser induced damage threshold (LIDT) is related to gamma-ray dose, and the LIDT decreases monotonously with increasing dose. A mechanism for the degradation of laser damage resistance is presented. (C) 2016 Elsevier GmbH. All rights reserved.
引用
收藏
页码：3853 / 3857
页数：5
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