Laser ultrasonics using photorefractive liquid crystals

Takeo Sasaki; Toshinobu Takashi; Kaita Suzuki; Gouta Ikeda; Miku Nagaoka; Yukihiro Ishii; Khoa Van Le; Yumiko Naka

doi:10.1117/12.2676230

29 September 2023 Laser ultrasonics using photorefractive liquid crystals

Takeo Sasaki, Toshinobu Takashi, Kaita Suzuki, Gouta Ikeda, Miku Nagaoka, Yukihiro Ishii, Khoa Van Le, Yumiko Naka

Proceedings Volume 12658, Liquid Crystals XXVII; 126580J (2023) https://doi.org/10.1117/12.2676230
Event: SPIE Organic Photonics + Electronics, 2023, San Diego, California, United States

Conference Poster

Abstract

Coaxial- and counter-optical setups for laser ultrasonics using a photorefractive liquid crystal were fabricated. The laser ultrasonics involves irradiating an object with a laser pulse to produce an ultrasonic vibration, and then using another laser beam to detect the vibration. The phase of the laser beam reflected from the object is shifted by the ultrasonic vibration. By using liquid crystals with photorefractive properties, the resulting phase shift of the laser beam reflected from the material can be detected. Compared to traditional laser ultrasonic methods, this system offers a simpler optical setup and allows for more precise measurements that are unaffected by environmental vibrations.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Takeo Sasaki, Toshinobu Takashi, Kaita Suzuki, Gouta Ikeda, Miku Nagaoka, Yukihiro Ishii, Khoa Van Le, and Yumiko Naka "Laser ultrasonics using photorefractive liquid crystals", Proc. SPIE 12658, Liquid Crystals XXVII, 126580J (29 September 2023); https://doi.org/10.1117/12.2676230

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