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Proceedings Paper

Numerical analysis of diffraction of image-bearing beam from a fixed index grating in photorefractive media
Author(s): Huitian Wang; Jiasen Zhang; Shin Yoshikado; Tadashi Aruga
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Paper Abstract

We analyzed numerically the diffraction of the image-bearing beam from a fixed index grating in a photorefractive medium on the steady state, using a 2D model that takes into account the newly photoinduced index grating by the incident and the diffracted Fourier plane waves. In this analysis, we ignore all the absorption and assume the transverse dimensions of the medium and all the gratings to be infinite. The results point out that the intensity patterns of the diffracted image-bearing depend strongly on the following factors: (i) the feature spatial size of the incident image; (ii) the coupling coefficient and the wave number of the fixed index grating; and (iii) the thickness of the crystal and the gratings. On the other hand, they do not nearly depend on the photorefractive coupling coefficient for all the exiting photorefractive media. The effects of the spatial displacement of the diffracted images is also predicted.

Paper Details

Date Published: 17 August 1998
PDF: 5 pages
Proc. SPIE 3554, Photorefractive Materials: Phenomena and Related Applications II, (17 August 1998); doi: 10.1117/12.318140
Show Author Affiliations
Huitian Wang, Communications Research Lab. (Japan)
Jiasen Zhang, Communications Research Lab. (Japan)
Shin Yoshikado, Communications Research Lab. (Japan)
Tadashi Aruga, Communications Research Lab. (Japan)

Published in SPIE Proceedings Vol. 3554:
Photorefractive Materials: Phenomena and Related Applications II
Peixian Ye; Tsutomu Shimura; Ratnakar R. Neurgaonkar, Editor(s)

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