Spectral dependence of photoexpansion in As2S3 glass

被引：26

作者：

Tanaka, K ^{[1
]}

机构：

[1] Hokkaido Univ, Fac Engn, Dept Appl Phys, Sapporo, Hokkaido 0608628, Japan

来源：

PHILOSOPHICAL MAGAZINE LETTERS | 1999年 / 79卷 / 01期

关键词：

D O I：

10.1080/095008399177624

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The mechanisms of photoexpansion in As(2)S(3) glass have been studied through the excitation energy dependence. When the glass is exposed to supergap light ((h) over bar omega greater than or equal to 2.7eV) in air, photodepression occurs, which is ascribable to photovaporization. In vacuum, the glass always expands. When the glass is illuminated by a weak bandgap ((h) over bar omega approximate to 2.4eV) or intense subgap ((h) over bar omega approximate to 2.0eV) light, the expansion is maximal. This intensity spectrum dependence resembles that of photoconduction, which suggests that the suppression of geminate recombination of photoexcited carriers is required for photoexpansion.

引用

页码：25 / 30

页数：6

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