Abstract
In this work, we took a closer look at transmissive polarization volume holograms (T-PVH) to provide clarifications on their geometry, physics, and optical responses by finite-difference time-domain (FDTD) simulation and experimental validation. First, we introduced the four possible geometries of T-PVH and simulated their optical responses in terms of diffraction efficiency, polarization selectivity, and polarization output. It is shown that the configuration we called “Slanted T-PVH (${\rm B} {\text-} \theta /{\rm D} {\text-} \theta + 90$),” where the director is perpendicular to the Bragg planes, has the advantageous property of maintaining circular output polarization states. For this configuration, a detailed simulation of spectral, angular, and polarization responses was completed. Finally, we validated the FDTD simulation results of the Slanted T-PVH (${\rm B} {\text-} \theta /{\rm D} {\text-} \theta + 90$) structures with experiments.
© 2021 Optical Society of America
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