Study of the subsurface photorefractive effect in lithium niobate |
| |
Authors: | I B Barkan V N Ishchenko S A Kochubei D I Lunenok A M Razhev |
| |
Institution: | (1) Institute of Thermophysics, Siberian Branch of the USSR Academy of Sciences, SU-630090 Novosibirsk-90, USSR |
| |
Abstract: | A new phenomenon of a strong irreversible variation of the refractive index ( n –0.2) in a skin layer (thickness 300 Å) has been discovered. The effect arises under the strong absorption of high-power uv radiation (249 nm, 5 ns, 20 MW/cm2). The characteristics of the subsurface photorefractive effect (SPRE) were identified by using the data on measurements of the reflection coefficient of a crystal and of the diffraction efficiency of a recorded phase grating. |
| |
Keywords: | 42 70 61 68 |
本文献已被 SpringerLink 等数据库收录! |