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

Iam Choon Khoo, Shuo Zhao

Research output: Contribution to journalArticle

11 Citations (Scopus)

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 - Jan 1 2014

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Liquid crystals
liquid crystals
nonlinearity
Microwaves
optical switching
Optical Kerr effect
Molecular electronics
microwaves
retraining
Nematic liquid crystals
Electrooptical effects
Refractive index
Demonstrations
molecular electronics
light modulation
Modulation
Kerr effects
Wavelength
electro-optics
Lasers

All Science Journal Classification (ASJC) codes

  • Radiation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

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