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An overview of the experimental setup. (a) The schematic diagram of the custom-built OR-PAM System. NDF, neutral density filter; FC, fiber coupler; SMF, single-mode fiber; OBJ, objective; DL, doublet lense; UST, ultrasonic transducer; DAQ, acquisition card; PC, personal computer. (b) Detailed view of the optical-acoustic beam combiner. (c) Lateral resolution measurement on a metallic blade edge. (d) A photograph of PDT treatment on a mice ear.
