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System diagrams. (a) Schematic of the optical-resolution photoacoustic microscopy (OR-PAM) system (b) Ultrasonic and optical beam coupling cube.
Average photoacoustic amplitude as a function of the incident laser fluence. (a) Saturable Absorber 580 dye, (b) DQOCI dye, (c) oxygenated lysed bovine blood, and (d) deoxygenated lysed bovine blood. Error bars represent the standard deviations of 1800 measurements.
Absorption relaxation times and saturation intensities of different absorbers.
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