All-Optical Switching of Infrared Optical Radiation Using Isotropic Liquid Crystal

P. G. LoPresti, P. Zhou, R. G. Linquist, I. C. Khoo

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


Experimental results of the transmission to total-internal reflection switching of a step-on CO2 laser beam by a dielectric-clad, isotropic liquid crystal film is presented. The use of the isotropic phase allows for polarization independence of the processes, while maintaining a moderate thermal nonlinearity. Dependence of switching speed on incident angle and energy density is evaluated. Experimental observations of the nonlinear switching effect with microsecond CO2 laser pulses are also presented.

Original languageEnglish (US)
Pages (from-to)723-728
Number of pages6
JournalIEEE Journal of Quantum Electronics
Issue number4
StatePublished - Apr 1995

All Science Journal Classification (ASJC) codes

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


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