Numerical analysis of diffraction of image-bearing beam from a fixed index grating in photorefractive media

Huitian Wang; Jiasen Zhang; Shin Yoshikado; Tadashi Aruga

doi:10.1117/12.318140

17 August 1998 Numerical analysis of diffraction of image-bearing beam from a fixed index grating in photorefractive media

Huitian Wang, Jiasen Zhang, Shin Yoshikado, Tadashi Aruga

Author Affiliations +

Proceedings Volume 3554, Photorefractive Materials: Phenomena and Related Applications II; (1998) https://doi.org/10.1117/12.318140
Event: Photonics China '98, 1998, Beijing, China

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.

Citation Download Citation

Huitian Wang, Jiasen Zhang, Shin Yoshikado, and Tadashi Aruga "Numerical analysis of diffraction of image-bearing beam from a fixed index grating in photorefractive media", Proc. SPIE 3554, Photorefractive Materials: Phenomena and Related Applications II, (17 August 1998); https://doi.org/10.1117/12.318140

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