Title :
Dynamic gratings and the associated self diffractions and wavefront conjugation processes in nematic liquid crystals
Author_Institution :
Department of Electrical Engineering, The Pennsylvania State University, University Park, PA
fDate :
8/1/1986 12:00:00 AM
Abstract :
The origins and the dynamics of optical nonlinearities in nematic liquid crystal films, namely, laser-induced molecular reorientational and thermal refractive index changes, are analyzed in the context of optical wave mixings. Theoretical expressions for the basic non-linearities, the rise and decay time, diffraction efficiencies, and other pertinent parameters involved in the dynamic grating formation are derived. Experimental results obtained with visible and infrared laser pulses are analyzed. Some newly observed novel nonlinear processes are also reported.
Keywords :
Liquid crystal materials/devices; Optical diffraction gratings; Optical mixers; Optical propagation in nonlinear media; Diffraction gratings; Laser theory; Laser transitions; Liquid crystals; Nonlinear optics; Optical diffraction; Optical films; Optical refraction; Optical variables control; Refractive index;
Journal_Title :
Quantum Electronics, IEEE Journal of
DOI :
10.1109/JQE.1986.1073100
