Photorefractive effects in long, narrow BSO crystals with applied electricfield

Authors
Cedilnik, G Esselbach, M Kiessling, A Kowarschik, R Nippolainen, E Kamshilin, AA Prokofiev, VV
Citation
G. Cedilnik et al., Photorefractive effects in long, narrow BSO crystals with applied electricfield, APP PHYS B, 68(5), 1999, pp. 983-987
Citations number
30
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
APPLIED PHYSICS B-LASERS AND OPTICS
ISSN journal
09462171 → ACNP
Volume
68
Issue
5
Year of publication
1999
Pages
983 - 987
Database
ISI
SICI code
0946-2171(199905)68:5<983:PEILNB>2.0.ZU;2-7
Abstract
In a photorefractive Bi12SiO20 crystal with high applied electric ac field of square-wave shape a fast two-wave coupling response (less than 1 s) and a slow hologram readout decay (minutes) was found for a wavelength of 633 n m. This can be explained by electron-hole transport with two trap levels. A n intensity dependence of the slower complementary grating was found. Illum inating with the readout wave without applied electric field leads to a ver y slow grating decay (many hours).