Estimation of trap concentration in photorefractive crystals by a technique of adaptive holographic interferometry

Authors
Petrov, VM Wevering, S Petrov, MP Kratzig, E
Citation
Vm. Petrov et al., Estimation of trap concentration in photorefractive crystals by a technique of adaptive holographic interferometry, APP PHYS B, 68(1), 1999, pp. 73-76
Citations number
8
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
APPLIED PHYSICS B-LASERS AND OPTICS
ISSN journal
09462171 → ACNP
Volume
68
Issue
1
Year of publication
1999
Pages
73 - 76
Database
ISI
SICI code
0946-2171(199901)68:1<73:EOTCIP>2.0.ZU;2-4
Abstract
A technique based on self-diffraction of the recording laser beams, one of which is phase modulated, is used for the estimation of the limiting trap c oncentration in photorefractive crystals. The amplitudes of the first and s econd harmonics of the diffracted beam have to be measured and from these d ata the trap concentration can be deduced. The technique is illustrated usi ng photorefractive sillenite crystals (Bi12GeO20, Bi12SiO20, Bi12TiO20).