Ultrasound-modulated optical imaging using a high-power pulsed laser and a double-pass confocal Fabry-Perot interferometer.
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.
Rousseau
Guy
G
Industrial Materials Institute, National Research Council of Canada, 75 de Mortagne Boulevard, Boucherville, Québec, Canada J4B 6Y4. guy.rousseau@cnrc-nrc.gc.ca
Blouin
Alain
A
Monchalin
Jean-Pierre
JP
D002244:Carbon; D007368:Interferometry; D007834:Lasers; D057054:Molecular Imaging / Q000295:instrumentation / Q000379:methods*; D055620:Optical Phenomena; D014465:Ultrasonics
C028433:chinese ink; D002244:Carbon