Fig. 2From: High-speed high-resolution laser diode-based photoacoustic microscopy for in vivo microvasculature imagingSpatial resolution measurement. a An LD-based PAM image of a carbon particle; b Lateral resolution measurement. The red circles are the experimental data along the white dotted line in Fig. a. The blue solid line is a Gaussian fitting function; c Axial resolution measurement. The red dotted line represents the envelope of the A-line signal of the central position of the carbon particle in Fig. aBack to article page