Optical patterns and nonlinear spatial structures

Details Optical patterns and nonlinear spatial structures Optical patterns and nonlinear spatial structures

Jun 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002spie.4806...55f&link_type=abstract

Proc. SPIE Vol. 4806, p. 55-66, Complex Mediums III: Beyond Linear Isotropic Dielectrics, Akhlesh Lakhtakia; Graeme Dewar; Marti

Physics

Optics

Scientific paper

Spontaneous spatial patterns occur in nonlinear systems with spatial coupling, e.g. through diffraction or diffusion. Strong enough nonlinearity can induce spatial symmetry breaking, such that a pattern becomes more stable than the unpatterned state. Instances discussed are in nonlinear optics, but the phenomena have a universal character, and are the basis of spatial differentiation in nature, from crystals to clouds, from giraffe-coats to galaxies. The basic theory and phenomena of pattern formation are reviewed, with examples from experiments and simulations (mainly from optics). Patterns usually consist of repeated units, and such units may exist in isolation as a localized structure. Such structures are akin to spatial solitons, and are potentially useful in image and/or information processing. The nature and properties of such structures are discussed and illustrated.

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