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Proceedings Paper

Comparison of photoacoustic imaging systems using continuous-wave lasers with a chirped intensity modulation frequency to pulsed lasers
Author(s): Adam Petschke; Patrick J. La Rivière
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Paper Abstract

We compare imaging systems using continuous-wave (CW) lasers with a chirped intensity modulation frequency to pulsed lasers. We show that the resolution is the same in both cases. We also compare the signal-to-noise ratio (SNR) of the two systems assuming the fluence is set by the American National Standards Institute (ANSI) limits. Although the SNR depends on several parameters, we find that it is about 20 dB to 30 dB larger for pulsed lasers for reasonable values of the parameters. However, CW diode lasers have the advantage of being compact and relatively inexpensive, which may outweigh the slightly lower SNR in many applications.

Paper Details

Date Published: 19 February 2011
PDF: 7 pages
Proc. SPIE 7899, Photons Plus Ultrasound: Imaging and Sensing 2011, 78992O (19 February 2011); doi: 10.1117/12.873983
Show Author Affiliations
Adam Petschke, The Univ. of Chicago Medical Ctr. (United States)
Patrick J. La Rivière, The Univ. of Chicago Medical Ctr. (United States)


Published in SPIE Proceedings Vol. 7899:
Photons Plus Ultrasound: Imaging and Sensing 2011
Alexander A. Oraevsky; Lihong V. Wang, Editor(s)

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