Preparation of fast-response photorefractive liquid crystals and their application to coaxial optical laser ultrasonics

Takeo Sasaki; Miku Nagaoka; Junko Watanabe; Yoshikaze Umebayashi; Ryouta Machida; Ryoji Masuzawa; Yumiko Naka; Khoa V. Le

doi:10.1117/12.3022041

18 June 2024 Preparation of fast-response photorefractive liquid crystals and their application to coaxial optical laser ultrasonics

Takeo Sasaki, Miku Nagaoka, Junko Watanabe, Yoshikaze Umebayashi, Ryouta Machida, Ryoji Masuzawa, Yumiko Naka, Khoa V. Le

Author Affiliations +

Proceedings Volume 13015, Photosensitive Materials and their Applications III; 130150X (2024) https://doi.org/10.1117/12.3022041
Event: SPIE Photonics Europe, 2024, Strasbourg, France

Abstract

Coaxial- and counter-optical setups for laser ultrasonics using a photorefractive liquid crystal were fabricated. In laser ultrasonics, an object is irradiated with a laser pulse to create an ultrasonic vibration, and then another laser beam is used 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 accurate measurements that are not affected by environmental vibrations.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Takeo Sasaki, Miku Nagaoka, Junko Watanabe, Yoshikaze Umebayashi, Ryouta Machida, Ryoji Masuzawa, Yumiko Naka, and Khoa V. Le "Preparation of fast-response photorefractive liquid crystals and their application to coaxial optical laser ultrasonics", Proc. SPIE 13015, Photosensitive Materials and their Applications III, 130150X (18 June 2024); https://doi.org/10.1117/12.3022041

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