Abstract
We derive an analytical expression describing the effect of phase modulation in two-wave mixing for dynamically recorded phase-shifted holograms in photorefractive materials. The temporal harmonic terms that arise from phase modulation are explicitly formulated for small modulation (as used in our experiments), allowing for pump depletion and an arbitrary value of the phase shift. The theory is experimentally verified for the particular case of an unshifted hologram in a photovoltaic crystal and for the general case of an arbitrarily shifted hologram in a crystal subject to an externally applied electric field, always for the 514.5-nm-wavelength laser light. In both cases the present analytical formulation permits material parameters to be computed that are self-consistent and in agreement with data in the literature.
© 1997 Optical Society of America
Full Article | PDF ArticleMore Like This
D. A. Fish and A. K. Powell
J. Opt. Soc. Am. B 14(10) 2628-2640 (1997)
Ivan de Oliveira and Jaime Frejlich
J. Opt. Soc. Am. B 18(3) 291-297 (2001)
Xianmin Yi, Changxi Yang, Pochi Yeh, Shiuan-Huei Lin, and Ken Yuh Hsu
J. Opt. Soc. Am. B 14(6) 1396-1406 (1997)