Photorefractive effect of smectic liquid crystals and their application to laser ultrasonic remote sensing

Takeo Sasaki; Takaaki Yagami; Toshinobu Takashi; Khoa Van Le; Yumiko Naka

doi:10.1117/12.2620786

24 May 2022 Photorefractive effect of smectic liquid crystals and their application to laser ultrasonic remote sensing

Takeo Sasaki, Takaaki Yagami, Toshinobu Takashi, Khoa Van Le, Yumiko Naka

Proceedings Volume 12151, Photosensitive Materials and their Applications II; 121510B (2022) https://doi.org/10.1117/12.2620786
Event: SPIE Photonics Europe, 2022, Strasbourg, France

Abstract

The photorefractive effect of flexoelectric smectic liquid crystal mixtures was investigated and applied to a laser ultrasonic remote sensing. Smectic liquid crystal mixtures, composed of smectic-C liquid crystals, photoconductive chiral compounds and a sensitizer, are known to exhibit a large photorefractive effect. The principle of the ultrasonic remote sensing is that a laser beam is irradiated on an object and the variation in the reflected light is detected by photorefractive two-beam coupling. This remote sensing method can be used to probe the internal structure of an object or to measure the thickness of a plate object without contact.

Conference Presentation

Citation Download Citation

Takeo Sasaki, Takaaki Yagami, Toshinobu Takashi, Khoa Van Le, and Yumiko Naka "Photorefractive effect of smectic liquid crystals and their application to laser ultrasonic remote sensing", Proc. SPIE 12151, Photosensitive Materials and their Applications II, 121510B (24 May 2022); https://doi.org/10.1117/12.2620786

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