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Proceedings Paper

Toward wide-field high-speed photoacoustic remote sensing microscopy
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Paper Abstract

Optical imaging modalities are commonly characterized by rapid acquisition rates, enabling real-time feedback. Photoacoustic Remote Sensing (PARS) microscopy takes advantage of intensity reflectivity modulations induced through large photoacoustic initial pressures to provide optical absorption imaging contrast. The PARS signals are characterized by short time-domain behavior independent of time-gated effects such as acoustic propagation to a detector. Here, improved imaging rates are demonstrated. This is accomplished by introducing an analog peak detection circuit, which reduces data bandwidth requirements, and by employing a high repetition rate fiber laser. These additions enable voxel scan rates in the megahertz range. High quality real-time captures, orders of magnitude faster than previous PARS systems, are presented.

Paper Details

Date Published: 19 February 2018
PDF: 8 pages
Proc. SPIE 10494, Photons Plus Ultrasound: Imaging and Sensing 2018, 1049423 (19 February 2018); doi: 10.1117/12.2291036
Show Author Affiliations
Logan Snider, Univ. of Alberta (Canada)
Kevan Bell, Univ. of Alberta (Canada)
illumiSonics Inc. (Canada)
Parsin Hajireza, Univ. of Alberta (Canada)
illumiSonics Inc. (Canada)
Roger J. Zemp, Univ. of Alberta (Canada)
illumiSonics Inc. (Canada)

Published in SPIE Proceedings Vol. 10494:
Photons Plus Ultrasound: Imaging and Sensing 2018
Alexander A. Oraevsky; Lihong V. Wang, Editor(s)

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