Title :
Nonlinear correction of a light beam shape in photorefractive optical waveguides
Author_Institution :
State Acad. of Control Syst. & Radioelectron., Tomsk, Russia
Abstract :
The self-actions of light in photorefractive media result in the phenomena of nonlinear optical surface waves and spatial solitons, effects of beam self-focusing and self defocusing. They can be realized here at optical powers some orders less than in Kerr media. Optical waveguides suggest in such a way additional advantages with respect to 3D media. It is due to the possible enhancement of their photorefractive properties by surface doping, with using different dopants for separate areas of the same sample, and larger light intensity within waveguides. In this work the changes of light beam shapes via spatial self-actions in lithium niobate optical waveguides doped by Fe are experimentally investigated and discussed.
Keywords :
iron; laser beams; lithium compounds; optical self-focusing; optical solitons; optical waveguides; photorefractive materials; 3D media; LiNbO/sub 3/:Fe; beam self-focusing; dopants; light beam shape; light beam shapes; light intensity; nonlinear correction; nonlinear optical surface waves; optical powers; photorefractive optical waveguides; self defocusing; self-actions; spatial self-actions; spatial solitons; surface doping; Doping; Lithium niobate; Nonlinear optics; Optical solitons; Optical surface waves; Optical waveguides; Photorefractive effect; Shape; Surface waves; Waveguide transitions;
Conference_Titel :
Lasers and Electro-Optics Society Annual Meeting, 1996. LEOS 96., IEEE
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-7803-3160-5
DOI :
10.1109/LEOS.1996.571528
