Simulation of harmonic and supercontinuum generation in polycrystalline media

Jiahui Gu, Michael G. Hastings, Miroslav Kolesik

Research output: Contribution to journalArticle

Abstract

Highly efficient, broadband frequency conversion in polycrystalline zinc-blende media receives increasing interest, motivated by both applications and understanding of the underlying processes. However, realistic simulations of the complex physics, in which random quasi-phase-matching plays a major role, is challenging because of the disorder. Here we present a family of models of increasing complexity, including a (3 + 1)D model with full resolution in time and space. Using ZnSe as the demonstration medium, we show that while a small-beam, axially symmetric approximation is able to provide qualitatively correct spectra at a low computation cost, the computationally more demanding (3 + 1)D approach achieves semi-quantitative agreement between the simulated supercontinuum spectrum and experiment results. The fully resolved (3 + 1)D simulations thus provide an accurate new tool for the characterization and optimization of supercontinuum generation in transparent polycrystals.

Original languageEnglish (US)
Pages (from-to)1510-1517
Number of pages8
JournalJournal of the Optical Society of America B: Optical Physics
Volume37
Issue number5
DOIs
StatePublished - May 1 2020

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ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Atomic and Molecular Physics, and Optics

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