Space-charge grating kinetics in photorefractive crystals
Author: Gusak, N.
Source: Technical Physics, Volume 51, Number 2, January 2006 , pp. 242-247(6)
Publisher: MAIK Nauka/Interperiodica
Abstract:Equations for the grating space-charge density and concentration of free carriers induced by a standing light wave in an anisotropic photorefractive crystal are derived and solved. The charge density and electric field are found to depend on the orientation of the graing relative to the crystal axes. It is shown that the grating kinetics is determined by the difference between two exponentials with characteristic times the sum of which can be treated as the decay constant of the grating. Three ranges of Maxwell relaxation times are distinguished, where this time constant behaves differently. The grating kinetics for a number of crystals is considered.
Document Type: Research Article
Affiliations: Email: email@example.com
Publication date: January 1, 2006