Title :
Velocity profile sensor using a frequency modulated laser diode and a molecular absorption cell
Author :
Müller, Harald ; Czarske, Jürgen ; Büttner, Lars ; Razik, Thorsten
Author_Institution :
Phys. Tech. Bundesanstalt, Braunschweig, Germany
Abstract :
The Doppler frequency shift of scattered light is detected by using an absorption cell. Evaluation of the 1st and 2nd harmonics of amplitude modulated light yields the Doppler frequency without power influences.
Keywords :
Doppler shift; amplitude modulation; frequency modulation; laser velocimeters; light scattering; optical modulation; optical sensors; semiconductor lasers; Doppler frequency shift; amplitude modulated light; frequency modulated laser diode; molecular absorption cell; scattered light; velocity profile sensor;
Conference_Titel :
Lasers and Electro-Optics, 2004. (CLEO). Conference on
Conference_Location :
San Francisco, CA
Print_ISBN :
1-55752-777-6
