Noncontact photoacoustic imaging achieved by using a low-coherence interferometer as the acoustic detector

Yi Wang, Chunhui Li, Ruikang K. Wang (Lead / Corresponding author)

    Research output: Contribution to journalArticle

    81 Citations (Scopus)

    Abstract

    We report on a noncontact photoacoustic imaging (PAI) technique in which a low-coherence interferometer [(LCI), optical coherence tomography (OCT) hardware] is utilized as the acoustic detector. A synchronization approach is used to lock the LCI system at its highly sensitive region for photoacoustic detection. The technique is experimentally verified by the imaging of a scattering phantom embedded with hairs and the blood vessels within a mouse ear in vitro. The system's axial and lateral resolutions are evaluated at 60 and 30 μm, respectively. The experimental results indicate that PAI in a noncontact detection mode is possible with high resolution and high bandwidth. The proposed approach lends itself to a natural integration of PAI with OCT, rather than a combination of two separate and independent systems.

    Original languageEnglish
    Pages (from-to)3975-3977
    Number of pages3
    JournalOptics Letters
    Volume36
    Issue number20
    Early online date12 Sep 2011
    DOIs
    Publication statusPublished - 15 Oct 2011

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