Comparison of photoacoustic imaging systems using continuous-wave lasers with a chirped intensity modulation frequency to pulsed lasers

Adam Petschke; Patrick J. La Rivière

doi:10.1117/12.873983

18 February 2011 Comparison of photoacoustic imaging systems using continuous-wave lasers with a chirped intensity modulation frequency to pulsed lasers

Adam Petschke, Patrick J. La Rivière

Author Affiliations +

Proceedings Volume 7899, Photons Plus Ultrasound: Imaging and Sensing 2011; 78992O (2011) https://doi.org/10.1117/12.873983
Event: SPIE BiOS, 2011, San Francisco, California, United States

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.

Citation Download Citation

Adam Petschke and Patrick J. La Rivière "Comparison of photoacoustic imaging systems using continuous-wave lasers with a chirped intensity modulation frequency to pulsed lasers", Proc. SPIE 7899, Photons Plus Ultrasound: Imaging and Sensing 2011, 78992O (18 February 2011); https://doi.org/10.1117/12.873983

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