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Photoacoustic holographic imaging of absorbers embedded in silicone
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Fluid and Experimental Mechanics.
Luleå University of Technology, Department of Engineering Sciences and Mathematics.ORCID iD: 0000-0001-8355-2414
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Fluid and Experimental Mechanics.ORCID iD: 0000-0003-4879-8261
2011 (English)In: Applied Optics, ISSN 1559-128X, E-ISSN 2155-3165, Vol. 50, no 17, p. 2551-2558Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2011. Vol. 50, no 17, p. 2551-2558
National Category
Applied Mechanics
Research subject
Experimental Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-4325DOI: 10.1364/AO.50.002551ISI: 000291872800008PubMedID: 21673756Scopus ID: 2-s2.0-79958856657Local ID: 241b00e5-2471-4e7d-aa46-499f2bfa2b40OAI: oai:DiVA.org:ltu-4325DiVA, id: diva2:977189
Note
Validerad; 2011; 20110405 (erka)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Olsson, ErikGren, PerSjödahl, Mikael

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