posted on 2023-08-16, 09:03authored byTakeo Sasaki, Toshinobu Takashi, Kaita Suzuki, Gouta Ikeda, Ayumi Kawano, Yukihiro Ishii, Khoa Le, Yumiko Naka
Laser ultrasonics using a photorefractive liquid crystal is investigated with coaxial- and counter-optical setups. The proposed laser ultrasonic method 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, this phase shift 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.
History
Funder Name
Precise Measurement Technology Promotion Foundation; Nakanishi Scholarship Foundation; Research Foundation of TOPY Enterprises Limited