Chinese Journal of Lasers, Volume. 49, Issue 3, 0307001(2022)

Design of Photoacoustic Microscope Based on Transparent Ultrasonic Transducer

Yong He1, Tangyun Liao1, Junwei Wu1,3, Lijun Deng1,2, Yu Deng3, Lüming Zeng1,2、*, and Xuanrong Ji1
Author Affiliations
  • 1State Key Laboratory of Precision Electronics Manufacturing Technology and Equipment, Guangdong University of Technology, Guangzhou, Guangdong 510006, China
  • 2Key Laboratory of Photoelectronics and Telecommunication of Jiangxi Province, Jiangxi Science and Technology Normal University, Nanchang, Jiangxi 330038, China
  • 3Doppler Electronic Technologies Incorporated Company, Guangzhou, Guangdong 510530, China
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    Conclusions

    In this paper, based on the contradictions among the scanning range, imaging speed of traditional photoacoustic microscope, and the prospect of miniaturization, a photoacoustic microscope based on a transparent transducer is proposed, and a series of works such as hardware design, software development and simulation experiment of the system are completed. On the basis of the traditional photoacoustic microscope, our laboratory independently develops a transparent ultrasonic transducer to optimize the optical path of the system. A set of photoacoustic microscope based on the transparent ultrasonic transducer is designed. The lateral resolution of the system is 18 μm and the signal-to-noise ratio is up to 38 dB, which both give a large imaging field of view and a fast imaging speed. A single imaging can achieve 16 mm×16 mm range. The laser repetition rate of the system is 5 kHz and the imaging speed of 100 Hz/mm can be achieved when the scanning step is 20 μm. At the same time, the vascular morphology in the biological tissue imaging experiment is consistent with that in the photos, suggesting that the system has the potential to be applied in the biomedical field. Above all, the photoacoustic microscope based on a transparent transducer can give consideration to both a large imaging field of view and a fast imaging speed, and has a good application prospect in system miniaturization and functional imaging of biological tissues.

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    Yong He, Tangyun Liao, Junwei Wu, Lijun Deng, Yu Deng, Lüming Zeng, Xuanrong Ji. Design of Photoacoustic Microscope Based on Transparent Ultrasonic Transducer[J]. Chinese Journal of Lasers, 2022, 49(3): 0307001

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    Paper Information

    Category: biomedical photonics and laser medicine

    Received: Apr. 30, 2021

    Accepted: Jun. 18, 2021

    Published Online: Jan. 18, 2022

    The Author Email: Zeng Lüming (zenglvming@163.com)

    DOI:10.3788/CJL202249.0307001

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