Selective erasure of holographic index gratings in photorefractive crystals

JianHua Zhao; Xiaonong Shen; Huanchu Chen

doi:10.1117/12.379371

10 March 2000 Selective erasure of holographic index gratings in photorefractive crystals

JianHua Zhao, Xiaonong Shen, Huanchu Chen

Proceedings Volume 3951, Diffractive/Holographic Technologies and Spatial Light Modulators VII; (2000) https://doi.org/10.1117/12.379371
Event: Symposium on Integrated Optoelectronics, 2000, San Jose, CA, United States

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.

Citation Download Citation

JianHua Zhao, Xiaonong Shen, and Huanchu Chen "Selective erasure of holographic index gratings in photorefractive crystals", Proc. SPIE 3951, Diffractive/Holographic Technologies and Spatial Light Modulators VII, (10 March 2000); https://doi.org/10.1117/12.379371

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