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5 August 1998 Optical properties of a double-layer polymer/LC grating by UV irradiation process
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A fabrication method and optical properties of a double- layer polymer/liquid-crystal (LC) grating are reported. The double-layer polymer/LC grating is fabricated by a simple single-step process with UV irradiation through a grating photomask, using a mixture of liquid crystal and prepolymer materials. This liquid crystal grating consists of two polymer/LC layers with a periodic relief structure. The alignment directions of liquid crystal molecules for the two layers are orthogonal to each other. The diffraction properties of the double-layer polymer/LC grating have been measured and compared with that of a single-layer one. Behaviors of the disclination lines have been also investigated under a voltage application. The results indicate that the double-layer polymer/LC grating has voltage-controllable polarization direction-independent diffraction properties.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Wentao He, Toshiaki Nose, and Susumu Sato "Optical properties of a double-layer polymer/LC grating by UV irradiation process", Proc. SPIE 3557, Current Developments in Optical Elements and Manufacturing, (5 August 1998);

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