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Liquid-crystals-plasmonics for ultrafast broadband all-optical switching

Published online by Cambridge University Press:  28 March 2011

I. C. Khoo
Affiliation:
Electrical Engineering Department, Pennsylvania State University, University Park, PA 16802
J. Huang
Affiliation:
Electrical Engineering Department, Pennsylvania State University, University Park, PA 16802
S. Zhou
Affiliation:
Electrical Engineering Department, Pennsylvania State University, University Park, PA 16802
J. Liou
Affiliation:
Electrical Engineering Department, Pennsylvania State University, University Park, PA 16802
K. L. Hong
Affiliation:
Electrical Engineering Department, Pennsylvania State University, University Park, PA 16802
Yi Ma
Affiliation:
Electrical Engineering Department, Pennsylvania State University, University Park, PA 16802
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Abstract

We present the results and critical analyses of recent studies of ultrafast optical nonlinearities of liquid crystals in the isotropic and ordered phases for time scales spanning femtoseconds – microseconds. Pure undoped liquid crystals as well as liquid crystals containing plasmonic nano-particles have been investigated. Individual molecular electronic optical nonlinearities are found to be useful for femtoseconds – nanoseconds nonlinear transmission clamping applications. On the other hand, laser induced order parameter and birefringence modification in aligned nematic cells allow very rapid transmission switching of visible as well as near infrared lasers with response times in the sub-microseconds - few nanoseconds regime.

Type
Research Article
Copyright
Copyright © Materials Research Society 2011

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References

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