Design of a pulsed digital holographic microscopy for dynamic ultrasonic wavefield

Wang Xing

doi:10.1117/12.2560014

17 April 2020 Design of a pulsed digital holographic microscopy for dynamic ultrasonic wavefield

Wang Xing

Proceedings Volume 11455, Sixth Symposium on Novel Optoelectronic Detection Technology and Applications; 1145513 (2020) https://doi.org/10.1117/12.2560014
Event: Sixth Symposium on Novel Photoelectronic Detection Technology and Application, 2019, Beijing, China

Abstract

Digital Holographic Microscopy (DHM) is the latest holographic technique, increasing the resolution by inserting a microscopic lens. In this paper, the non - contact measurement method of the dynamic ultrasonic wavefield on the surface is studied. Aiming at the characteristics of the continuous dynamic ultrasonic wavefield, a pulsed laser based DHM system is designed in this paper. The system consists of a pulsed nano-second laser, a CCD camera with short shutter time, high sensitivity and high SNR, a microscopic lens, a novel optical subsystem, and a synchronous control system. The performance of the designed DHM system is tested on the standard resolution test target and ultrasonic transducer. The results of the experiment show that the transient three - dimensional topography of the dynamic ultrasonic wavefield is measured at different moments and effectively.

Citation Download Citation

Wang Xing "Design of a pulsed digital holographic microscopy for dynamic ultrasonic wavefield", Proc. SPIE 11455, Sixth Symposium on Novel Optoelectronic Detection Technology and Applications, 1145513 (17 April 2020); https://doi.org/10.1117/12.2560014

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KEYWORDS

Ultrasonics

Digital holography

Pulsed laser operation

Beam splitters

Holograms

Holography

CCD cameras

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