Infrared and visible laser induced thermal & density optical nonlinearities in nematic and isotropic liquid crystals

R. G. Lindquist, P. G. LoPresti, I. C. Khoo

Research output: Contribution to journalConference articlepeer-review

3 Scopus citations

Abstract

Using a Q-switched CO2 laser pulse induced dynamic grating technique, the basic mechanisms for the optical nonlinearities of nematic and isotropic liquid crystals in the infrared (10.6 μm) region are reexamined. The principle mechanisms are the density and temperature effects, which are characterized by relaxation times in the nano- and micro-second time scales, respectively. Optical self-limiting effects and optical switching using isotropic liquid crystals are also demonstrated for visible nanosecond(Q-switch NdiYAG at 0.53 μm) and for infrared microsecond laser pulses, respectively.

Original languageEnglish (US)
Pages (from-to)148-158
Number of pages11
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume1692
DOIs
StatePublished - Aug 18 1992
EventNonlinear and Electro-Optic Materials for Optical Switching 1992 - Orlando, United States
Duration: Apr 20 1992 → …

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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