Affiliation:
1. Japan Science and Technology Agency
2. University of Hyogo
Abstract
A lot of research on liquid crystal polarization gratings (LCPGs) that
can separate circularly polarized light with 100% diffraction
efficiency has been conducted in the visible and near-infrared
wavelength regions. In this paper, we tried to design and fabricate
the LCPGs that are available for use in the mid- and far-infrared (MIR
and FIR) wavelength regions. The materials for making LCPGs were
selected in view of low absorption characteristics measured by the use
of a Fourier-transform infrared (FT-IR) spectrometer. LCPGs designed
for 3.88 µm and 9.5–10.6 µm were
fabricated, and we evaluated their diffraction properties
experimentally. The MIR and FIR LCPGs should open new application
fields of LC technologies including polarimetry, spectroscopy, and
beam steering.
Funder
Core Research for Evolutional Science and
Technology
Cited by
3 articles.
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