Abstract

We consider how absorption-induced beam depletion alters the index-modulation profile, the diffracted beam profile, and the Bragg selectivity of volume holograms. We derive theoretical equations that consider beam depletion (in the absence of two-beam coupling) and compare these with experimental observations. We also derive a smart scheduling technique whereby such absorption effects can be compensated for during the scheduled recording of multiple holograms. In our smart scheduling approach, during recording the profile of the input signal beam is modified such that during recall its output profile is uniform.

© 1996 Optical Society of America

Absorption effects in photorefractive volume-holographic memory systems. II. Material heating

Scott Campbell, Shiuan-Huei Lin, Xianmin Yi, and Pochi Yeh
J. Opt. Soc. Am. B 13(10) 2218-2228 (1996)

Sparse-wavelength angle-multiplexed volume holographic memory system: analysis and advances

Scott Campbell and Pochi Yeh
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Nonuniformity in hologram diffraction efficiency from time-constant error in the recording schedule

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J. Opt. Soc. Am. B 13(5) 894-899 (1996)