Circularly-polarized, large-angle reflective deflectors based on periodically patterned cholesteric liquid crystals
نویسندگان
چکیده
Patterned cholesteric liquid crystals enable the fabrication of circular-polarization sensitive, re ective di ractive optical elements based on Bragg re ection. Here we report the fabrication of large-angle re ective deector, which show de ection angles as large as 48.9°. The devices are fabricated by polarization holography, whereby two orthogonal circular polarized beams are superimposed on a photoalignment layer to create a linear modulation of the orientational easy axis. The devices show high circular-polarization extinction ratios, making them potentially useful as functional re ectors and polarization splitters.
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