Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6956808 | Photoacoustics | 2018 | 26 Pages |
Abstract
The development of low-cost and fast photoacoustic microscopy systems enhances the clinical applicability of photoacoustic imaging systems. To this end, we present a laser scanning laser diode-based photoacoustic microscopy system. In this system, a 905 nm, 325 W maximum output peak power pulsed laser diode with 50 ns pulsewidth is utilized as the light source. A combination of aspheric and cylindrical lenses is used for collimation of the laser diode beam. Two galvanometer scanning mirrors steer the beam across a focusing aspheric lens. The lateral resolution of the system was measured to beââ¼21 μm using edge spread function estimation. No averaging was performed during data acquisition. The imaging speed is â¼370 A-lines per second. Photoacoustic microscopy images of human hairs, ex vivo mouse ear, and ex vivo porcine ovary are presented to demonstrate the feasibility and potentials of the proposed system.
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Authors
Mohsen Erfanzadeh, Patrick D. Kumavor, Quing Zhu,