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Absorption spectra of photocrosslinkable polymer liquid crystal. The inset shows the chemical structure. The arrow shows the wavelength of writing beams.
(a) Illustration of three-dimensional grating formation in photocrosslinkable polymer liquid crystal film. (b) The spatial distribution of directors calculated using the elastic continuum theory.
Experimental and calculated results of diffraction properties of the three-dimensional phase grating. (a) Diffraction efficiencies of -ordered diffraction. represents the polarization, LP linear polarization with slanted direction, and LCP means left-hand-side circular polarization. (b) Polarization states of transmitted and diffracted beams from the grating. The numbers described at the top of tables represent the diffraction order. Filled circles represent the experimental observation and solid curves represent the theoretical expectation.
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