Laser scanning laser diode photoacoustic microscopy system
| Autor: | Mohsen Erfanzadeh, Quing Zhu, Patrick D. Kumavor |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Low-cost sources
Materials science Laser scanning lcsh:QC221-246 02 engineering and technology 01 natural sciences Collimated light law.invention 010309 optics symbols.namesake Optics law 0103 physical sciences lcsh:QC350-467 Radiology Nuclear Medicine and imaging Diode Laser diode business.industry 021001 nanoscience & nanotechnology Galvanometer lcsh:QC1-999 Atomic and Molecular Physics and Optics Photoacoustic Doppler effect Aspheric lens Biological imaging lcsh:Acoustics. Sound symbols Optoelectronics Medical imaging Photoacoustic imaging 0210 nano-technology business lcsh:Physics lcsh:Optics. Light Research Article Diode lasers |
| Zdroj: | Photoacoustics Photoacoustics, Vol 9, Iss, Pp 1-9 (2018) |
| ISSN: | 2213-5979 |
| Popis: | 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 be ∼21 μm using edge spread function estimation. No averaging was performed during data acquisition. The imaging speed is ∼370 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. Keywords: Photoacoustic imaging, Diode lasers, Medical imaging, Biological imaging, Low-cost sources |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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