[23a-12B-1~11] 3.1 Basic optics and frontier of optics (merged with formerly 3.2 Equipment optics and materials)

9:00 AM - 9:15 AM JST(12:00 AM - 12:15 AM UTC)

[23a-12B-1] Formation of mid-and far-infrared liquid crystal retarder and influence of absorption anisotropy

〇(M1)Kuon Kawamura¹, Sora Ohara¹, Yohei Mitsuboshi¹, Moritugu Sakamoto^1,3, Kohei Noda^1,3, Masato Suzuki^1,3, Tomoyuki Sasaki^1,3, Nobuhiro Kawatsuki^2,3, Hiroshi Ono^1,3 (1.Nagaoka Univ. Tech., 2.Hyogo Univ., 3.CREST-JST)

Keywords:

infrared light,liquid crystal retarder,polarization

Recently, polarized light imaging, which enables non-contact visualization of information on the birefringence and surface structure of a subject, has attracted much attention. We have previously fabricated a liquid crystal retarder for infrared light and converted infrared light into polarization. Due to the wavelength-dependent absorption anisotropy of liquid crystals, it is difficult to obtain perfect circular polarization at some wavelengths. In this study, we attempted to explain quantitatively why the emitted light is not perfectly circularly polarized by comparing the experimental and numerical results using numerical calculations.