Surface grating formation and erasing on a-Se films

被引：0

作者：

V. Palyok

I.A. Szabó

D.L. Beke

A. Kikineshi

机构：

[1] Department of Solid State Electronics,

[2] Uzhgorod State University,undefined

[3] Pindhirna St. 46,undefined

[4] Uzhgorod 88000,undefined

[5] Ukraine,undefined

[6] Department of Solid State Physics,undefined

[7] Debrecen University,undefined

[8] 4010,undefined

[9] Debrecen,undefined

[10] P.O. Box 2,undefined

[11] Hungary,undefined

来源：

Applied Physics A | 2002年 / 74卷

关键词：

PACS: 42.70.Ln; 42.40.Ht; 81.05.Gc;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Surface relief formation at holographic recording on amorphous selenium films was demonstrated and investigated. The presence of this optical phase modulation component is essential for ensuring significant, stable and erasable optical recording in a-Se films at 290–320 K temperatures, where conventional photodarkening was known as insignificant and unstable. Photocrystallization can only be observed in super-exposed a-Se films at the given experimental conditions of hologram recording. Erasing behavior of surface relief gratings under heat treatment was also investigated in order to reveal further details of the mechanism. Photoinduced structural transformations within the amorphous phase, connected to local ordering under the condition of light-induced fluidity, are proposed as an explanation for the relief formation and erasing. The observed reversible optical recording process may be useful for the various optoelectronic applications of photoconductive a-Se layers.

引用

页码：683 / 687

页数：4