Title :
Formation of spatial solitons in photorefractive crystals with an alternating electric field
Author :
Shandarov, Stanislav M. ; Frolova, Marina N. ; Borodin, Maxim V.
Author_Institution :
Dept. of Electron. Devices, Tomsk State Univ. of Control Syst. & Radioelectronics, Russia
Abstract :
The formation of solitons in photorefractive crystals with an applied DC electric field has been the object of intense investigation. The effects of self-focusing, self-defocusing and the spatial solitons occur when the photorefractive response of the crystal is due to the "quasilocal" drift mechanism of the photorefractive nonlinearity. The diffusion (gradient-type) nonlinearity is usually the reason of a distortion of the solitons. Two kinds of response occur in a crystal with an applied square-wave electric field. The aim of this work is to show that the relative contributions of the two components of the photorefractive response of the crystal could be changed by adjustment of the electric field magnitude and modulation depth of the light
Keywords :
optical self-focusing; optical solitons; photorefractive effect; alternating electric field; diffusion nonlinearity; electric field magnitude; modulation depth; photorefractive crystals; photorefractive nonlinearity; photorefractive response; quasilocal drift mechanism; self-defocusing; self-focusing; soliton distortion; spatial soliton formation; square-wave electric field; Control systems; Crystals; Intensity modulation; Optical beams; Optical modulation; Optical propagation; Photorefractive effect; Photorefractive materials; Radio control; Solitons;
Conference_Titel :
Electron Devices and Materials, 2002. SIBEDEM 2002. The IEEE-Siberian Conference on
Conference_Location :
Tomsk
Print_ISBN :
0-7803-7274-3
DOI :
10.1109/SIBEDM.2002.998052
