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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 6, Iss. 7 — Jul. 27, 2011

Photoacoustic holographic imaging of absorbers embedded in silicone

Erik Olsson, Per Gren, and Mikael Sjödahl  »View Author Affiliations


Applied Optics, Vol. 50, Issue 17, pp. 2551-2558 (2011)
http://dx.doi.org/10.1364/AO.50.002551


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Abstract

Light absorbing objects embedded in silicone have been imaged using photoacoustic digital holography. The photoacoustic waves were generated using a pulsed Nd:YAG laser, λ = 1064 nm , and pulse length = 12 ns . When the waves reached the silicone surface, they were measured optically along a line using a scanning laser vibrometer. The acoustic waves were then digitally reconstructed using a holographic algorithm. The laser vibrometer is proven to be sensitive enough to measure the surface velocity due to photoacoustic waves generated from laser pulses with a fluence allowed for human tissue. It is also shown that combining digital holographic reconstructions for different acoustic wavelengths provides images with suppressed noise and improved depth resolution. The objects are imaged at a depth of 16.5 mm with a depth resolution of 0.5 mm .

© 2011 Optical Society of America

OCIS Codes
(110.5120) Imaging systems : Photoacoustic imaging
(170.3340) Medical optics and biotechnology : Laser Doppler velocimetry
(170.3880) Medical optics and biotechnology : Medical and biological imaging
(090.1995) Holography : Digital holography

ToC Category:
Imaging Systems

History
Original Manuscript: January 5, 2011
Revised Manuscript: March 23, 2011
Manuscript Accepted: March 29, 2011
Published: June 1, 2011

Virtual Issues
Vol. 6, Iss. 7 Virtual Journal for Biomedical Optics

Citation
Erik Olsson, Per Gren, and Mikael Sjödahl, "Photoacoustic holographic imaging of absorbers embedded in silicone," Appl. Opt. 50, 2551-2558 (2011)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ao-50-17-2551

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