Nonlinear dynamics in laser polarization conversion by stimulated scattering in nematic liquid crystal films.
We present a study of the nonlinear dynamics of a coherent polarization conversion process in nematic liquid crystal films. This effect is mediated by two-beam coupling between the incident polarized laser and its orthogonally polarized (lower-frequency) noise component scattered by the director axis fluctuations. A complete model for the director dynamics derived from the basic equations is presented. The existence of complex, time-, and intensity-dependent dynamics of the director motion such as oscillations and various bifurcations including period doubling is revealed.
Khoo
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Department of Electrical Engineering, Pennsylvania State University, University Park, Pennsylvania 16802, USA.
Diaz
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