title: Noncontact photoacoustic imaging based on all-fiber heterodyne interferometer.
abstract: We report on a noncontact photoacoustic imaging system utilizing an all-fiber-optic heterodyne interferometer as an acoustic wave detector. The acoustic wave generated by a short laser pulse via the photoacoustic effect and arriving at the sample surface could be detected with the fiber-optic heterodyne interferometer without physical contact or using an impedance matching medium. A phantom experiment was conducted to evaluate the proposed system, and the initial acoustic pressure distribution was calculated using a Fourier-based reconstruction algorithm. It is expected that the all-fiber-optic configuration of the proposed system can be applied as a minimally invasive diagnostic tool.
authors.forename: Seong Jun
authors.initials: SJ
authors.lastname: Park
authors.forename: Jonghyun
authors.initials: J
authors.lastname: Eom
authors.forename: Yong Ho
authors.initials: YH
authors.lastname: Kim
authors.forename: Chang Su
authors.initials: CS
authors.lastname: Lee
authors.forename: Byeong Ha
authors.initials: BH
authors.lastname: Lee
mesh_terms: D054459:Elasticity Imaging Techniques / Q000295:instrumentation*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005336:Fiber Optic Technology / Q000295:instrumentation*; D007089:Image Enhancement / Q000295:instrumentation*; D007368:Interferometry / Q000295:instrumentation*; D019047:Phantoms, Imaging; D061088:Photoacoustic Techniques / Q000295:instrumentation*