Title

Induced modulation instability of partially spatially incoherent light with varying perturbation periods

Authors

Authors

Z. G. Chen; J. Klinger;D. N. Christodoulides

Comments

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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

WOS:000180427100090

ISSN

1539-3755

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