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Proceedings Paper

2D photoacoustic scanning imaging with a single pulsed laser diode excitation
Author(s): Xuegang Chen; Changwei Li; Lvming Zeng; Guodong Liu; Zhen Huang; Zhong Ren
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Paper Abstract

A portable near-infrared photoacoustic scanning imaging system has been developed with a single pulsed laser diode, which was integrated with an optical lens system to straightforward boost the laser energy density for photoacoustic generation. The 905 nm laser diode provides a maximum energy output of 14 μJ within 100 ns pulse duration, and the pulse repetition frequency rate is 0.8 KHz. As a possible alternative light source, the preliminary 2D photoacoustic results primely correspond with the test phantoms of umbonate extravasated gore and knotted blood vessel network. The photoacoustic SNR can reach 20.6±1.2 dB while signal averaging reduces to 128 pulses from thousands to tens of thousands times, and the signal acquisition time accelerates to less than 0.2 s in each A-scan, especially the volume of the total radiation source is only 10 × 3 × 3 cm3. It demonstrated that the pulsed semiconductor laser could be a candidate of photoacoustic equipment for daily clinical application.

Paper Details

Date Published: 13 March 2012
PDF: 6 pages
Proc. SPIE 8329, Tenth International Conference on Photonics and Imaging in Biology and Medicine (PIBM 2011), 832909 (13 March 2012); doi: 10.1117/12.918741
Show Author Affiliations
Xuegang Chen, Nanchang Hangkong Univ. (China)
Changwei Li, Nanchang College of Education (China)
Lvming Zeng, Jiangxi Science and Technology Normal Univ. (China)
Guodong Liu, Jiangxi Science and Technology Normal Univ. (China)
Zhen Huang, Jiangxi Science and Technology Normal Univ. (China)
Zhong Ren, Jiangxi Science and Technology Normal Univ. (China)


Published in SPIE Proceedings Vol. 8329:
Tenth International Conference on Photonics and Imaging in Biology and Medicine (PIBM 2011)
Qingming Luo; Lihong V. Wang; Valery V. Tuchin, Editor(s)

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