A puncture needle is at least partially inserted into a subject. An optical fiber guides light with a first wavelength and an optical fiber guides light with a second wavelength. The light guided by the optical fiber is emitted from a first light emitting portion and the light guided by the optical fiber is emitted from a second light emitting portion. A light absorption member absorbs the light with the first wavelength emitted from the first light emitting portion to generate photoacoustic waves and transmits the light with the second wavelength emitted from the second light emitting portion.
