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Proceedings Paper

Properties of harmonic gratings in Mn:KNSBN in the process of electrical domain fixing
Author(s): Xiaonong Shen; JianHua Zhao; Ruibo Wang; Zhenxiang Cheng; Shujun Zhang; Huanchu Chen
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Paper Abstract

Photorefractive crystals have many applications in holographic storage, optical communications, and nonlinear optical information processing. One problem is that the photorefractive holographic index gratings can be erased in the readout process. Several non-destructive approaches have been proposed and demonstrated in different photorefractive materials. Based on the initial research of domain fixing on KNSBN crystals, we studied the high order harmonic gratings during electrical domain fixing process in KNSBN crystals. In this paper, we mainly focus on the properties of the first order and second order harmonic index gratings of Mn-doped KNSBN crystal during electrical domain fixing process at room temperature. Domain fixing in Rh:SBN was also investigated, and the results in Mn:KNSBN and Rh:SBN were compared. In Mn:KNSBN crystals, the second order harmonic grating becomes stronger after fixing. This may be the main reason of the high noise in the revealed grating, which affects the image quality and fidelity. In addition, the effect of the accumulated charges in the revealing process was also discussed.

Paper Details

Date Published: 10 March 2000
PDF: 7 pages
Proc. SPIE 3951, Diffractive/Holographic Technologies and Spatial Light Modulators VII, (10 March 2000); doi: 10.1117/12.379372
Show Author Affiliations
Xiaonong Shen, Shandong Univ. (United States)
JianHua Zhao, Shandong Univ. (United States)
Ruibo Wang, Univ. of California/Santa Barbara (United States)
Zhenxiang Cheng, Shandong Univ. (China)
Shujun Zhang, Shandong Univ. (China)
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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