Title :
Near-field spatial light modulator based on photoinduced hexagonal array of waveguides
Author :
Kukhtarev, N. ; Kukhtareva, T. ; Banerjee, P.P. ; Frazier, D.O. ; Penn, B. ; Abdeldaem, H.
Author_Institution :
Dept. of Phys., Alabama A&M Univ., Normal, AL, USA
Abstract :
Summary form only given. There is a great need of fast temporal-spatial light modulators (TSLMs) for optical processing using coherent beams. Here we suggest another scheme of fast TSLM based on photoinduced hexagonal array of photorefractive waveguides. It was found, that in some thick photorefractive crystals, counterpropagating laser beams in the presence of a scattering seed develop highly regular hexagonal arrays both in the near and far fields. This phenomenon observed in a 1-cm-thick photorefractive crystal KNbO/sub 3/ was explained as the formation of self-induced waveguides, which create the near-field hexagonal pattern by optical channeling.
Keywords :
optical arrays; optical waveguides; photorefractive materials; potassium compounds; spatial light modulators; 1 cm; KNbO/sub 3/; counterpropagating laser beams; far fields; fast temporal-spatial light modulators; near fields; near-field hexagonal pattern; near-field spatial light modulator; optical channeling; optical processing; photoinduced hexagonal array; photorefractive crystal; photorefractive waveguides; regular hexagonal arrays; scattering seed; self-induced waveguides; Crystals; Laser beams; Light scattering; Optical arrays; Optical modulation; Optical scattering; Optical waveguides; Photorefractive effect; Photorefractive materials; Waveguide lasers;
Conference_Titel :
Lasers and Electro-Optics, 2000. (CLEO 2000). Conference on
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
1-55752-634-6
DOI :
10.1109/CLEO.2000.906735
