MECHANISM AND DYNAMICS OF TRANSIENT THERMAL GRATING DIFFRACTION IN NEMATIC LIQUID CRYSTAL FILMS.

Iam Choon Khoo, Richard Normandin

Research output: Contribution to journalArticle

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Abstract

A study was made of the mechanism and the dynamics of degenerate four-wave mixing in a nematic liquid crystal film. Nanosecond laser pulses are used to generate an index grating associated with the changes in the density and in the order parameter. The authors have measured and analyzed the contribution from these two mechanisms, their interference effects rise and decay time constants, and have also performed a detailed analysis of the diffraction efficiency. This study quantitatively characterizes the potential usefulness of nematic films for four-wave mixing based applications.

Original languageEnglish (US)
Pages (from-to)329-335
Number of pages7
JournalIEEE Journal of Quantum Electronics
VolumeQE-21
Issue number4
Publication statusPublished - Apr 1 1985

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All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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