Three-dimensional simulations of degenerate counterpropagating beam instabilities in a nonlinear medium

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Abstract

We report our findings from a detailed series of three-dimensional simulations of degenerate counterpropagating beam instabilities in a nonlinear Kerr medium. These simulations show the formation of far field intensity patterns with both radial and hexagonal symmetries in agreement with recent experiments. Moreover, we suggest that the ring patterns which are characteristic of degenerate conical emission are transient phenomena which are always replaced by hexagons for long enough times, at least close to the plane-wave threshold. For misaligned input beams we observe the formation of a stabel point defect, a penta-hepta pair, in the hexagonal pattern.

Original languageEnglish (US)
Pages (from-to)167-172
Number of pages6
JournalOptics Communications
Volume88
Issue number2-3
DOIs
StatePublished - Mar 15 1992

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Point defects
simulation
hexagons
Experiments
point defects
far fields
plane waves
thresholds
rings
symmetry

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Three-dimensional simulations of degenerate counterpropagating beam instabilities in a nonlinear medium. / Chang, R.; Firth, W. J.; Indik, Robert A; Moloney, Jerome V; Wright, Ewan M.

In: Optics Communications, Vol. 88, No. 2-3, 15.03.1992, p. 167-172.

Research output: Contribution to journalArticle

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