Pulsed Laser Doppler Anemometer for Multicomponent Applications,

reportActive / Technical Report | Accession Number: ADP008945 | Need Help?

Abstract:

The application of high-frequency pulsed diode lasers in a two-component backscattering laser Doppler anemometer is explored. Basically, each component is a standard fringe type dual beam LDA, but instead of operating the lasers in cw-mode, a high frequency pulse-mode is used. The benefits are a multi-component measuring technique using the same wavelength, a multiple energy-density in the measuring volume at time of interest and a single receiving system and data acquisition system. Aspects on pulsing the diodes, optical wavelength spectra as well as the receiving system and electronic data reduction methods will be outlined. Author Experimental results of a two component pulsed LDA will be presented. Author

Author(s):
Strunck, V. ; Dopheide, D. ; Rinker, M.
Author Organization(s):
TECHNICAL UNIV OF LISBON (PORTUGAL)
Supplementary Note:
This article is from 'International Symposium on Applications of Laser Techniques to Fluid Mechanics and Workshop on Computers in Flow Measurements (6th) Held in Lisbon, Portugal on July 20-23, 1992', AD-A258 510, p11.2.1-11.2.5.
Pagination:
0005

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Monitor Series:
R/D
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*LASER ANEMOMETERS, *PULSED LASERS, DOPPLER EFFECT, MULTIMODE, DIODES, LASERS, LIGHT SCATTERING, BACKSCATTERING, OPTICAL INTERFEROMETERS, GERMANY
Field(s)/Group(s):
Test Facilities, Equipment and Methods, Lasers and Masers
Keyword(s):
Component Reports, LDA(Laser Doppler Anemometry), Foreign reports
Report Date:
1992 Jul 23