Split-step Fourier methods applied to model nonlinear refractive effects in optically thick media

J. M. Burzler, S. Hughes, B. S. Wherrett

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

We describe and example the Beam Propagation Method (BPM) used to model and simulate nonlinear refractive and absorptive effects in materials with applications to optical limiting and switching. Various scenarios including laser-beam trapping and laser-beam division are investigated, in order to demonstrate the power of the BPM. A novel technique is also described for efficiently modelling the external far-field propagation from nonlinear media, including the propagation of non-Gaussian-shaped spatial profiles. The methods are finally combined with the phenomenon of nonlinear absorption to demonstrate enhanced power limiting in the presence of self-refraction. Optimal parameters for high-fluence power-limiting are subsequently discussed.

Original languageEnglish
Pages (from-to)389-397
Number of pages9
JournalApplied Physics B: Lasers and Optics
Volume62
Issue number4
Publication statusPublished - Apr 1996

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