Title :
Parallel propagation of coherent bright beams in a self-defocusing photorefractive crystal
Author :
Mendez Otero, M.M. ; Iturbe-Castillo, M.D. ; Ramos-Garcia, Raul ; Torres-Cisneros, Miguel ; Alvarado-Mendez, E.
Author_Institution :
Inst. Nacional de Astrofisica, Opt. y Electron., Puebla, Mexico
Abstract :
Summary form only given. Photorefractive crystals are very versatile media for experiments on spatial soliton because they need very low intensities (/spl mu/W/cm/sup 2/) and the sign of the nonlinearity can be switched from positive to negative changing the polarity of the external electric field applied to the crystal. With the parallel propagation of bright beams with a separation shorter than the width it is possible to generate output intensity distributions similar to dark spatial solitons when the relative phase between the beams is /spl Pi/.
Keywords :
light coherence; optical self-focusing; optical solitons; photorefractive materials; bright beams; coherent bright beams; dark spatial solitons; external electric field; nonlinearity sign switching; output intensity distributions; parallel propagation; polarity; relative phase; self-defocusing photorefractive crystal; spatial soliton; very low intensities; Crystals; Diffraction; Fiber nonlinear optics; Lenses; Mirrors; Optical fibers; Optical propagation; Optimized production technology; Photorefractive materials; Solitons;
Conference_Titel :
Quantum Electronics and Laser Science Conference, 1999. QELS '99. Technical Digest. Summaries of Papers Presented at the
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
1-55752-576-X
DOI :
10.1109/QELS.1999.807448
