Photoacoustic element, photoacoustic imaging device, and method for manufacturing photoacoustic element

摘要

PROBLEM TO BE SOLVED: To realize a photoacoustic element having excellent optical characteristics and acoustic characteristics. A photoacoustic element (1) includes a metal layer (10), a first member (11) joined to one main surface of the metal layer (10), and the other main surface of the metal layer (10). It includes a second member (12) joined to the surface. The metal layer (10) reflects light waves and transmits photoacoustic waves caused by the light waves. The materials of the metal layer (10), the first member (11), and the second member (12) are the acoustic impedance of the metal layer (10) and the acoustic impedance of the first member (11) and the second member (12). Is selected to be consistent. [Selection diagram] Fig. 1