Multiple scale hexagonal patterns

Author

Mamaev, A.V. ; Saffman, M.

Author_Institution

Inst. of Problems in Mech., Acad. of Sci., Moscow, Russia

fYear

1996

fDate

7-7 June 1996

Firstpage

129

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;

fLanguage

English

Publisher

ieee

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

Type

conf

Filename

865663