PROBLEM TO BE SOLVED: To enhance convenience of a user and suppress a temperature of a part that makes contact with an analyte.SOLUTION: A photoacoustic probe 10 comprises: a light source part 13 that makes contact with an analyte Bd an acoustic wave detection part 14 that detects an acoustic wave generated in the analyte Bd and a fluid flow path 40 in which an acoustic matching fluid flows. The fluid flow path 40 includes a heat exchanging part 43 that is arranged in the light source part 13 and transmits heat of a light emitter 130 to the acoustic matching fluid, and a fluid supply part 50 that applies the acoustic matching fluid on a surface of the analyte Bd.SELECTED DRAWING: Figure 5COPYRIGHT: (C)2016,JPO&INPIT【課題】使用者の利便性を上げるとともに、被検体と接触する部分の温度を抑える。【解決手段】被検体Bdと接触する光源部13と、被検体Bd内部で発生する音響波を検出する音響波検出部14と、音響整合流体が流れる流体流路40とを有し、流体流路40が、光源部13に設けられて発光素子130の熱を音響整合流体に伝達させる熱交換部43と、音響整合流体を被検体Bdの表面に塗布する流体供給部50とを有している光音響探触子10。【選択図】図5
