Title: Modulation Instability and Pattern Formation in Spatially Incoherent Light Beams
Authors: Kip, Detlef  
Soljacic, Marin
Segev, Mordechai
Eugenieva, Evgenia
Christodoulides, Demetrios N.
Language: en
Subject (DDC): DDC::500 Naturwissenschaften und Mathematik
Issue Date: May-2000
Publisher: American Association for the Advancement of Science
Document Type: Article
Journal / Series / Working Paper (HSU): Science 
Volume: 290
Issue: 5491
Page Start: 495
Page End: 498
Publisher Place: Washington, DC
Abstract: 
We present the first experimental observation of modulation instability of
partially spatially incoherent light beams in non-instantaneous nonlinear
media. We show that even in such a nonlinear partially coherent system (of
weakly-correlated particles) patterns can form spontaneously. Incoherent MI
occurs above a specific threshold that depends on the beams' coherence
properties (correlation distance), and leads to a periodic train of
one-dimensional (1D) filaments. At a higher value of nonlinearity, incoherent
MI displays a two-dimensional (2D) instability and leads to self-ordered arrays
of light spots.
Organization Units (connected with the publication): Universität Osnabrück
URL: http://arxiv.org/abs/physics/0005083v1
ISSN: 00368075
DOI: 10.1126/science.290.5491.495
Appears in Collections:Publications of the HSU Researchers (before HSU)

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