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Proceedings Paper

Selective erasure of holographic index gratings in photorefractive crystals
Author(s): JianHua Zhao; Xiaonong Shen; Huanchu Chen
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Paper Abstract

We proposed a novel method to realize selective erasure of holographic index gratings in the photorefractive crystals. This scheme is based on the self-enhancement of the index gratings in the photorefractive materials. It is a save-erase- restore procedure, namely, save wanted information-erase unwanted information-restore wanted information. Simple experimental results are also presented. The requirement in this scheme is that the material has the effect of self- enhancement, i.e. the index grating is transmission grating, the product of the coupling constant and the thickness is above the threshold of the self-enhancement. But it eliminates the critical requirement of preventing vibration in the previous (pi) -phase-shift scheme.

Paper Details

Date Published: 10 March 2000
PDF: 6 pages
Proc. SPIE 3951, Diffractive/Holographic Technologies and Spatial Light Modulators VII, (10 March 2000); doi: 10.1117/12.379371
Show Author Affiliations
JianHua Zhao, Shandong Univ. (United States)
Xiaonong Shen, Shandong Univ. (United States)
Huanchu Chen, Shandong Univ. (China)


Published in SPIE Proceedings Vol. 3951:
Diffractive/Holographic Technologies and Spatial Light Modulators VII
Ivan Cindrich; Sing H. Lee; Richard L. Sutherland, Editor(s)

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