Inspection of internal structures of objects by laser ultrasonics using photorefractive liquid crystals

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

doi:10.1117/12.3026072

30 September 2024 Inspection of internal structures of objects by laser ultrasonics using photorefractive liquid crystals

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

Author Affiliations +

Proceedings Volume 13121, Liquid Crystals XXVIII; 1312107 (2024) https://doi.org/10.1117/12.3026072
Event: Organic Photonics + Electronics, 2024, San Diego, California, United States

Abstract

Laser ultrasonics using a photorefractive liquid crystal was investigated in both 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 provides more accurate measurements that are unaffected by environmental vibrations.

Conference Presentation

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

Citation Download Citation

Takeo Sasaki, Ryoji Masuzawa, Ryouta Machida, Yoshikaze Umebayashi, Miku Nagaoka, Junko Watanabe, Khoa Van Le, and Yumiko Naka "Inspection of internal structures of objects by laser ultrasonics using photorefractive liquid crystals", Proc. SPIE 13121, Liquid Crystals XXVIII, 1312107 (30 September 2024); https://doi.org/10.1117/12.3026072

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

;

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE