We report experimental results that demonstrate for the first time, to our knowledge, more than 20 holograms stored and recalled with equal diffraction efficiency in photorefractive LiNbO3. A physical explanation for this new recording procedure is presented, and a comparison is made with previous exposure methods that shows an order-of-magnitude increase in diffraction efficiency with the order of exposure for optically erasable holograms. The procedure holds for recording times much less than the saturation exposure time.
© 1989 Optical Society of America
Original Manuscript: May 9, 1988
Manuscript Accepted: September 23, 1988
Published: January 1, 1989
A. C. Strasser, E. S. Maniloff, K. M. Johnson, and S. D. D. Goggin, "Procedure for recording multiple-exposure holograms with equal diffraction efficiency in photorefractive media," Opt. Lett. 14, 6-8 (1989)