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All-optical switching of infrared optical radiation using isotropic liquid crystal

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4 Author(s)
LoPresti, P.G. ; Dept. of Electr. Eng., Pennsylvania State Univ., University Park, PA, USA ; Zhou, P. ; Linquist, R.G. ; Khoo, I.C.

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

Published in:

Quantum Electronics, IEEE Journal of  (Volume:31 ,  Issue: 4 )

Date of Publication:

Apr 1995

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