We have fabricated electrically switchable holographic gratings, using Polaroid Corporation's DMP-128 photopolymer filled with the nematic liquid crystal E7. It is shown that a coupled-wave theory that includes the effects of the birefringence of the liquid crystal must be used to explain the diffraction properties of these anisotropic volume gratings. Furthermore, a detailed comparison of theory and experiment provides information about the alignment of the liquid crystal within the polymer host.
© 2000 Optical Society of America
James J. Butler and Michelle S. Malcuit, "Diffraction properties of highly birefringent liquid-crystal composite gratings," Opt. Lett. 25, 420-422 (2000)