Comparative experiments of photoacoustic system using laser light source and LED array light source

Toshitaka Agano; Naoto Sato; Hitoshi Nakatsuka; Kazuo Kitagawa; Takamitsu Hanaoka; Koji Morisono; Yusuke Shigeta

doi:10.1117/12.2077357

11 March 2015 Comparative experiments of photoacoustic system using laser light source and LED array light source

Toshitaka Agano, Naoto Sato, Hitoshi Nakatsuka, Kazuo Kitagawa, Takamitsu Hanaoka, Koji Morisono, Yusuke Shigeta

Proceedings Volume 9323, Photons Plus Ultrasound: Imaging and Sensing 2015; 93233X (2015) https://doi.org/10.1117/12.2077357
Event: SPIE BiOS, 2015, San Francisco, California, United States

Abstract

We’ve successfully measured photoacoustic signal by NIR-LED array that has very small power, approx. 1/1500 of light amount compared with Nd:YAG OPO light. In order to achieve high output power, we drove NIR-LED array with unusual amount of electric current. The experiment results showed that the photoacoustic signal strength was about 1/40 of the laser, which suggests NIR-LED array has good photoacoustic reception efficiency versus the ultrasound transducer bandwidth. NIR-LED array photoacoustic system may be able to achieve high-speed imaging which cannot be obtained by the solid-state laser. NIR-LED system can be a game changer for photoacoustic imaging.

Citation Download Citation

Toshitaka Agano, Naoto Sato, Hitoshi Nakatsuka, Kazuo Kitagawa, Takamitsu Hanaoka, Koji Morisono, and Yusuke Shigeta "Comparative experiments of photoacoustic system using laser light source and LED array light source", Proc. SPIE 9323, Photons Plus Ultrasound: Imaging and Sensing 2015, 93233X (11 March 2015); https://doi.org/10.1117/12.2077357

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