In a photorefractive Bi₁₂SiO₂₀ crystal with high applied electric AC field of square-wave shape a fast two- wave coupling response (less than 1 second) and a slow hologram readout decay (minutes) was found for a wavelength of 633 nm. This can be explained by electron-hole transport with two trap-levels. An intensity dependence of the slower complementary grating was found. Illuminating with the readout wave without applied electric field leads to a very slow grating decay (many hours).

Date Published: 19 July 1999
PDF: 2 pages
Proc. SPIE 3749, 18th Congress of the International Commission for Optics, (19 July 1999); doi: 10.1117/12.354867

Published in SPIE Proceedings Vol. 3749:
18th Congress of the International Commission for Optics
Alexander J. Glass; Joseph W. Goodman; Milton Chang; Arthur H. Guenther; Toshimitsu Asakura, Editor(s)