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Calculation of the efficiency of polarization-insensitive surface-stabilized ferroelectric liquid-crystal diffraction
Carl V Brown1, Emmanouil E Kriezis
1Department of Engineering Science, University of Oxford, Parks Road, Oxford OX1 3PJ, United Kingdom. carl.brown@eng.ox.ac.uk
Abstract:
A rigorous analysis is presented of the diffraction efficiency of a polarization-insensitive surface-stabilized ferroelectric liquid-crystal (SSFLC) phase grating, taking full account of the internal structure of the ferroelectric liquid-crystal layer. When no field is applied, the twisted director profile in the relaxed state gives an optimum diffraction efficiency for a device thickness between the half-wave-plate and the full-wave-plate conditions. The influence of the magnitude of the spontaneous polarization and applied ac fields are investigated, and it is shown that the diffraction efficiency of a binary SSFLC phase grating can be strongly enhanced with the technique of ac stabilization.
