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has been cited by the following article:

• TITLE: Photoacoustic Imaging with a Line-Focus Laser Beam for Rapid Inspection and Tomographic Characterization of Simulated Surface and Undersurface Defects

  AUTHORS: Tsutomu Hoshimiya, Mika Hatake-Yama

  KEYWORDS: Imaging; Photoacoustic; Tomography; Line-Focus Beam

  JOURNAL NAME: Open Journal of Acoustics, Vol.3 No.2A, June 20, 2013

  ABSTRACT: A photoacoustic (PA) imaging apparatus using a laser line-focus beam (LFB) was designed to perform rapid inspection and photoacoustic tomographic (PAT) imaging of surface and undersurface defects. 2D-PAT imaging of surface and undersurface defects was demonstrated based on a formulation similar to the X-ray tomography. The obtained PAT images represented forward-projected PA signals collected along the LFB. The reconstructed images were in close agreement with those obtained from laser point-focus beam (PFB) PA imaging. We achieved rapid non-destructive inspection of a surface-simulated defect using a LFB. The reconstructed PA image of the undersurface defect was consistent with that obtained by a plane-thermal wave diffraction model.