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Ultrasound-modulated optical imaging using a high-power pulsed laser and a double-pass confocal Fabry-Perot interferometer

 
 
Affiliation:
National Research Council Canada; NRC Industrial Materials Institute
Language:
English
Type:
Article
Published in:
Optics Letters
Date:
2009
Pages :
3445-3447
NRCC #:
52396
NPArC #:
12951890
Abstract:
We report the use of short ultrasonic bursts and high-peak-power laser pulses to detect absorbing objects in thick scattering media (SMs). The detection of ultrasound-tagged photons is performed with a double-pass confocal Fabry–Perot interferometer. Photons shifted by the fundamental and harmonic frequencies of the ultrasonic bursts were observed. Absorbing objects were detected in 30- and 60-mm-thick SMs including a sample of biological tissue.
 
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