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Fig. 1 | Visual Computing for Industry, Biomedicine, and Art

Fig. 1

From: High-speed high-resolution laser diode-based photoacoustic microscopy for in vivo microvasculature imaging

Fig. 1

LD-based PAM system design. a The diagram of the optical system that demagnifies the emitter size of the LD on the image plane; b The schematic of LD-based PAM; c The scanning trajectory of the system; d The waveform of the LD light pulse, showing a pulse width of ~ 25 ns; e The spectrum of the LD light pulse, showing a center wavelength of ~ 439 nm. L: lens; f: focal length; IP: image plane; AL: aspheric lens; CL: cylindrical lens; OL: objective lens; S: sample; UT: ultrasonic transducer; WT: water tank; DAQ: data acquisition card

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