A compact differential laser Doppler velocimeter using a semiconductor laser
| Autor: | M.A. Helsdingen, Jg Aarnoudse, J.A.J. van Beurden, H.W. Jentink, F.F.M. de Mul, Jan Greve, H.E. Suichies |
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| Přispěvatelé: | University of Twente |
| Rok vydání: | 1987 |
| Předmět: |
Physics
Distributed feedback laser Laser diode business.industry Water flow General Engineering General Physics and Astronomy Physics::Optics Laser Doppler velocimetry Laser IR-59007 law.invention Semiconductor laser theory Optics law General Materials Science Physics::Atomic Physics business Instrumentation Diffraction grating Laser Doppler vibrometer |
| Zdroj: | Journal of physics E: scientific instruments, 20(10), 1281-1283. IOP Publishing Ltd. |
| ISSN: | 0022-3735 |
| DOI: | 10.1088/0022-3735/20/10/029 |
| Popis: | A small differential laser Doppler velocimeter which uses a semiconductor laser and a small number of optical components is described. In this device the light from the laser diode is split into coherent beams by means of a diffraction grating. The two first-order beams are crossed in a probe volume with a lens. In a test experiment the velocity of water containing 0.9 mu m polystyrene spheres was determined from the fluctuation of the scattered light. This velocity agreed with the velocity calculated from flux measurements. |
| Databáze: | OpenAIRE |
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