The invention discloses a high-consistency photoacoustic excitation and detecting integrated
fiber probe, a manufacturing method and a testing method thereof. According to the probe, a light absorbingmaterial (such as
graphene or
molybdenum disulfide and the like) and an elastic material (PDMS) are combined and deposited on the end surface of a double-clad
fiber, and high-power pulse
laser is utilized for performing photoacoustic
signal excitation. Furthermore a light-absorbing sensitive material and a single-mode
fiber end surface form a Fabry-Perot (F-P) interference chamber for realizing photoinduced ultrasonic
signal detection. The probe has a photoacoustic
excitation function and a detecting function and can be manufactured and formed in one time. Furthermore because the light absorbing material is prepared through a chemical
liquid phase deposition method, the high-consistency photoacoustic excitation and detecting integrated
fiber probe has advantages of controllable thickness,low number of steps, high
repeatability, etc. Therefore, the
fiber type photoactoustic probe has advantages of photoacoustic
signal receiving-and-transmitting integration, small size, simple manufacture, high consistency, high photoacoustic conversion efficiency, high
electromagnetic interference resistance, etc. The high-consistency photoacoustic excitation and detecting integrated
fiber probe can be used in the fields such as industrial nondestructive detection, biomedical ultrasonic and material characteristic measurement.