Dark Rings From Photorefractive Conical Diffraction In A BaTiO[sub]3[/sub] Crystal

Tallis Y. Chang; Pochi Yeh

doi:10.1117/12.939711

22 April 1988 Dark Rings From Photorefractive Conical Diffraction In A BaTiO₃ Crystal

Tallis Y. Chang, Pochi Yeh

Proceedings Volume 0739, Phase Conjugation, Beam Combining, and Diagnostics; (1988) https://doi.org/10.1117/12.939711
Event: OE LASE'87 and EO Imaging Symposium, 1987, Los Angeles, CA, United States

Abstract

A portion of photorefractively fanned light, in the shape of a ring, is absent (i.e., appears as a dark ring) when two laser beams of extraordinary polarization are transmitted through a BaTiO₃ crystal. These dark rings are due to two sets of index gratings destructively interfering to eliminate part of the fanning hologram. Bragg phase-matching conditions determine the shape and size of dark rings.

Citation Download Citation

Tallis Y. Chang and Pochi Yeh "Dark Rings From Photorefractive Conical Diffraction In A BaTiO₃ Crystal", Proc. SPIE 0739, Phase Conjugation, Beam Combining, and Diagnostics, (22 April 1988); https://doi.org/10.1117/12.939711

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