Abstract
Based on advanced development of laser and computer technologies as well as on extended requirements in high quality flow measurements, LDA systems have become commercially well available and state of the art products. The hardware of an LDA system consists of transmitting and receiving units. The optical component in the transmitting unit commonly counts the laser, the laser beam transmitter including the Bragg cells and splitters, the fiber and the LDA-head, as shown in Fig. 4.1a for a system of Dantec Dynamics. The laser that is mostly used in LDA measurements is the argon-ion laser that basically provides three selectable wavelengths of 514.5, 488 and 476.5 nm. An LDA system is usually configured to use the laser light of the wavelength 514.5 (green) and 488 (blue) nanometers.
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References
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Zhang, Z. (2010). LDA Systems. In: LDA Application Methods. Experimental Fluid Mechanics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-13514-9_4
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DOI: https://doi.org/10.1007/978-3-642-13514-9_4
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