Integrated optoelectronic probe including a vertical cavity surface emitting laser for laser Doppler perfusion monitoring
| Autor: | Wiendelt Steenbergen, H. van Kranenburg, J. Nieland, Herman H. P. Th. Bekman, F.F.M. de Mul, Sjoerd Oosterbaan, Alexandre Serov |
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| Přispěvatelé: | Biomedical Photonic Imaging, TNO Defensie en Veiligheid |
| Jazyk: | angličtina |
| Rok vydání: | 2006 |
| Předmět: |
Semiconductor laser
Optics and Photonics Optical fiber Materials science Transducers Biomedical Engineering Fiber optics Laptop computers Optoelectronic devices Sensitivity and Specificity Signal law.invention Semiconductor laser theory Vertical-cavity surface-emitting laser symbols.namesake Optics law Laser-Doppler Flowmetry Humans Diagnosis Computer-Assisted Blood flow measurement Semiconductor lasers Vertical cavity surface emitting laser (VCSEL) Laser diode business.industry Physics Reproducibility of Results Equipment Design Laser Doppler velocimetry Doppler effect Light emitting diodes Electronics Medical Equipment Failure Analysis Systems Integration Blood Doppler perfusion monitoring symbols Optoelectronics business Laser Doppler vibrometer |
| Zdroj: | IEEE Transactions on Biomedical Engineering, October, 10, 53, 2067-2074 IEEE transactions on biomedical engineering, 53(10), 2067-2074. IEEE |
| ISSN: | 0018-9294 |
| DOI: | 10.1109/tbme.2006.877106 |
| Popis: | An integrated optoelectronic probe with small dimensions, for direct-contact laser Doppler blood flow monitoring has been realized. A vertical cavity surface emitting laser (VCSEL), and a chip with photodetectors and all necessary electronics are integrated in a miniature probe head connected to a laptop computer. The computer sound processor is utilized for acquisition and digital signal processing of the incoming Doppler signal. In this paper, the design of the laser Doppler perfusion monitor is described and its performance is evaluated. We demonstrate our perfusion monitor to be less sensitive to subject motion than a commercial fiber-optic device. For medium and high perfusion levels, the performance of our integrated probe is comparable to the fiber-optic flowmeter containing a normal edge-emitting laser diode. For very low perfusion levels, the signal-to-noise ratio of the fiber-optic device is higher. This difference can mainly be attributed to the shorter coherence length of the VCSEL compared with the edge-emitting laser diode. |
| Databáze: | OpenAIRE |
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