Fig. 5From: Fiber laser technologies for photoacoustic microscopySRS-based multiwavelength fiber laser source for functional PAM. (a): Schematic of the laser and PAM; (b): Laser output spectrum; (c): Temporal signal of the output laser; and (d): In vivo oxygen saturation imaging result. Scale bar: 200 μm. Closeup shows the variation in oxygen saturation in single capillaries [34]Back to article page