Title :
Multiple scale hexagonal patterns
Author :
Mamaev, A.V. ; Saffman, M.
Author_Institution :
Inst. of Problems in Mech., Acad. of Sci., Moscow, Russia
Abstract :
Summary form only given. Hexagonal optical patterns appear as a result of a transverse instability of counterpropagating laser beams in a nonlinear medium. When the nonlinear medium is placed in an optical cavity that provides feedback, additional resonances come into play. By use of the polished end faces of the nonlinear medium, here a 5-mm-long photorefractive crystal of KNbO/sub 3/, as a weakly reflecting Fabry-Ferot cavity new spatial scales corresponding to cavity resonances are selected.
Keywords :
Fabry-Perot resonators; laser beams; laser feedback; laser stability; nonlinear optics; photorefractive materials; potassium compounds; reflectivity; 5 mm; KNbO/sub 3/; cavity resonances; counterpropagating laser beams; feedback; multiple scale hexagonal patterns; nonlinear medium; optical cavity; photorefractive crystal; polished end faces; spatial scales; transverse instability; weakly reflecting Fabry-Ferot cavity; Four-wave mixing; Frequency; Nonlinear optics; Optical mixing; Optical pumping; Optical scattering; Optimized production technology; Resonance; Stimulated emission; Tunable circuits and devices;
Conference_Titel :
Quantum Electronics and Laser Science Conference, 1996. QELS '96., Summaries of Papers Presented at the
Conference_Location :
Anaheim, CA, USA
Print_ISBN :
1-55752-444-0
