Abbreviated Journal Title
Phys. Rev. E
Keywords
NONLINEAR MEDIA; OPTICAL BEAMS; SOLITONS; GENERATION; Physics, Fluids & Plasmas; Physics, Mathematical
Abstract
We demonstrate experimentally that a periodic perturbation on a partially spatially incoherent optical beam induces modulation instability that depends strongly on the perturbation periods as well as on the strength of the nonlinearity and the degree of spatial coherence. At a fixed value of the nonlinearity and coherence, the incoherent modulation instability has a maximum growth at a preferred perturbation period (or spatial frequency), leading to the formation of ordered patterns. While the nonlinearity in our photorefractive system is inherently anisotropic, pattern control and pattern switching with anisotropic coherence is readily realized. Our experimental observations are in good agreement with theoretical predictions.
Journal Title
Physical Review E
Volume
66
Issue/Number
6
Publication Date
1-1-2002
Document Type
Article
Language
English
First Page
5
WOS Identifier
ISSN
1539-3755
Recommended Citation
Chen, Zhigang; Klinger, Jill; and Christodoulides, Demetrios N., "Induced modulation instability of partially spatially incoherent light with varying perturbation periods" (2002). Faculty Bibliography 2000s. 3120.
https://stars.library.ucf.edu/facultybib2000/3120
Comments
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