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DOE OSTI · 22594507

Three-dimensionally modulated anisotropic structure for diffractive optical elements created by one-step three-beam polarization holographic photoalignment

Kawai, Kotaro·Sakamoto, Moritsugu·Noda, Kohei·Sasaki, Tomoyuki·Ono, Hiroshi·Kawatsuki, Nobuhiro
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Abstract

A diffractive optical element with a three-dimensional liquid crystal (LC) alignment structure for advanced control of polarized beams was fabricated by a highly efficient one-step photoalignment method. This study is of great significance because different two-dimensional continuous and complex alignment patterns can be produced on two alignment films by simultaneously irradiating an empty glass cell composed of two unaligned photocrosslinkable polymer LC films with three-beam polarized interference beam. The polarization azimuth, ellipticity, and rotation direction of the diffracted beams from the resultant LC grating widely varied depending on the two-dimensional diffracted position and the polarization states of the incident beams. These polarization diffraction properties are well explained by theoretical analysis based on Jones calculus.

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71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITYALIGNMENTANISOTROPYDIFFRACTIONFILMSGLASSHOLOGRAPHYLIQUID CRYSTALSPOLARIZATIONPOLARIZED BEAMSPOLYMERSROTATIONSPACE DEPENDENCETHREE-DIMENSIONAL CALCULATIONSTWO-DIMENSIONAL CALCULATIONS

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Kawai, Kotaro, Sakamoto, Moritsugu, Noda, Kohei, Sasaki, Tomoyuki, Ono, Hiroshi, Kawatsuki, Nobuhiro. 2016-03-28. Three-dimensionally modulated anisotropic structure for diffractive optical elements created by one-step three-beam polarization holographic photoalignment. https://doi.org/10.1063/1.4944810

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