| 摘要 |
<P>PROBLEM TO BE SOLVED: To guide a high-energy laser beam while suppressing end-surface damage in an optical fiber during photoacoustic imaging to be performed by guiding a laser beam using the optical fiber. <P>SOLUTION: A photoacoustic imaging apparatus 10 includes: a diffuser plate 12 which diffuses a laser beam Lo made incident from the upstream side of an optical system; a focusing lens system 13 which focuses the laser beam Lo that has been diffused by the diffuser plate 12; and an optical fiber cable 14 which contains optical fibers 41 having a core 41a/cladding 41b structure, and is disposed to make the laser beam Lo focused by the focusing lens system 13 incident from one end. A light irradiation unit 15 emits the laser beam Lo guided by the optical fiber cable 14 as measurement light L. <P>COPYRIGHT: (C)2013,JPO&INPIT |
