Fig. 1From: Recovery of photoacoustic images based on accurate ultrasound positioningSystem schematic. A laser at a 532 nm wavelength is coaxially coupled with an ultrasound beam through a photoacoustic prism and is reflected onto the sample by a rotating mirror. With the rotation of the rotating mirror, the position of the optical beam and sound beam reflected on the sample will change. The scanning area is divided into the visible field and invisible fieldBack to article page