Applied Physics Letters
A reflective liquid crystal diffraction grating is proposed which makes use of the maximum available surface area. The structure consists of alternating stripes, each a twisted-nematic domain with surface orientation perpendicular to that of its neighbors. All domains have the same twist sense. This device yields, in principle, 100% diffraction efficiency independent of incident polarization. (C) 1997 American Institute of Physics.
Titus, C. M. and Bos, Philip J. (1997). Efficient, Polarization-Independent, Reflective Liquid Crystal Phase Grating. Applied Physics Letters 71(16), 2239-2239 2241. Retrieved from http://digitalcommons.kent.edu/cpippubs/15