PROBLEM TO BE SOLVED: To provide a small and high-sensitive photoacoustic spectroscopy device.SOLUTION: The photoacoustic spectroscopy device includes: an excitation laser source 3 for emitting a laser beam to a subject a vertical resonator 2 to which acoustic waves generated as the laser beam is emitted to the subject are propagated a measurement laser source 4 for emitting a measurement laser beam to the vertical resonator an excitation laser control part for controlling the cycle of starting and stopping the emission of the laser beam to match with the resonant frequency of the vertical resonator and a beam receiving part 5 for receiving the measurement laser beam emitted from the vertical resonator to detect acoustic waves.COPYRIGHT: (C)2013,JPO&INPIT【課題】小型でかつ高感度な光音響分光装置を提供すること。【解決手段】被検体に励起用レーザー光を出射する励起用レーザー光源3と、被検体にレーザー光を出射することで発生する音響波が伝搬する縦共振器2と、縦共振器に、測定用レーザー光を出射する測定用レーザー光源4と、縦共振器の共振周波数と一致させるように、励起用レーザー光の出射及び停止の周期を制御する励起レーザー制御部と、縦共振器から出射した測定用レーザー光を受光して、音響波を検出する受光器5とを備える。【選択図】図1
