Simulation of the degradation of optical glass substrates caused by UV irradiation while coating

被引：9

作者：

Gatto, A ^{[1
]}

Escoubas, L ^{[1
]}

Roche, P ^{[1
]}

Commandre, M ^{[1
]}

机构：

[1] Ecole Natl Super Phys Marseille, Lab Opt Surfaces & Couches Minces, UPRES A CNRS 6080, F-13397 Marseille 20, France

来源：

OPTICS COMMUNICATIONS | 1998年 / 148卷 / 4-6期

关键词：

absorption; photoinduced degradation; glass substrate; color center; solarization;

D O I：

10.1016/S0030-4018(97)00651-2

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The radiation induced degradation of optical glass substrates during thin film deposition, which has been shown previously, is studied using simulation. Influence of UV irradiation by spectral lamps and excimer laser on fused silica acid borosilicate glasses is investigated. Photothermal deflection is used to measure the increase in BK7 absorption versus time during UV irradiation. We also study means permitting a curing of UV induced absorption: first thermal annealing, and second focusing a visible laser beam onto the irradiated area. The results show that UV radiation can be responsible for an important part of substrate absorption increase while coating, (C) 1998 Elsevier Science B.V.

引用

页码：347 / 354

页数：8

共 36 条

[1]

Arbuzov VI, 1996, GLASS PHYS CHEM+, V22, P477

[2] 248 NM INDUCED VACUUM UV SPECTRAL CHANGES IN OPTICAL-FIBER PREFORM CORES - SUPPORT FOR A COLOR CENTER MODEL OF PHOTOSENSITIVITY [J].