Multiple time scales optical nonlinearities of liquid crystals for optical-terahertz-microwave applications

Iam Choon Khoo, Shuo Zhao

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

We provide a critical account of the dynamics of laser induced refractive index changing mechanisms in nematic liquid crystals which may be useful for all-optical switching and modulation applications in the visible as well as the Terahertz and long-wavelength regime. In particular, the magnitude and response times of optical Kerr effects associated with director axis reorientation, thermal and order parameter changes, coupled flow-reorientation effects and individual molecular electronic responses are thoroughly investigated and documented, along with exemplary experimental demonstrations. Emphases are placed on identifying parameter sets that will enable all-optical switching with much faster response times compared to their conventional electro-optics counterparts.

Original languageEnglish (US)
Pages (from-to)37-56
Number of pages20
JournalProgress in Electromagnetics Research
Volume147
DOIs
StatePublished - 2014

All Science Journal Classification (ASJC) codes

  • Radiation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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