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(A) Schematic of the PRC-based PAM system. FC: fiber optic collimator, M: Mirror, DM: dichroic mirror, QW: quarter-waveplate, OBJ: objective, BS: beamsplitter, HW: half-waveplate PRC: photorefractive crystal, BD: beam dump, PD: photodetector, F: laser line filter. (B) (left) PAM image of ex-vivo retinal samples, (right) Photograph of the sample. (C) (left) photoacoustic image of blood smear showing RBC; (right) corresponding bright field image. Reprinted with permission from [181].
