NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Narrowband lidar technique for sodium temperature and Doppler wind observations of the upper atmosphereA new two-frequency lidar for measuring mesospheric Na temperature profiles is described that uses a stabilized CW single-mode dye laser oscillator (rms frequency jitter less than 1 MHz) followed by a pulsed dye power amplifier (140 MHz FWHM linewidth) that is pumped by an injection-locked Nd:YAG laser. The laser oscillator is tuned to the two operating freqencies by observing the Doppler-free structure of the Na D2 fluorescence spectrum in a vapor cell. The lidar technique and initial observations of the temperature profile between 82 and 102 km at Ft. Collins, CO are described. Absolute temperature accuracies at the Na layer peak of better than + or - 3 K with a vertical resolution of 1 km and an integration period of approximately 5 min were achieved in this initial experiment. Finally, a multiple frequency technique for the simultaneous measurement of both temperature and Doppler wind profiles is discussed.
Document ID
19910038504
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Bills, Richard E.
(Illinois Univ. Urbana-Champaign, IL, United States)
Gardner, Chester S.
(Illinois, University Urbana, United States)
She, Chiao-Yao
(Colorado State University Fort Collins, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1991
Publication Information
Publication: Optical Engineering
Volume: 30
ISSN: 0091-3286
Subject Category
Lasers And Masers
Accession Number
91A23127
Funding Number(s)
CONTRACT_GRANT: NSF ATM-88-11771
CONTRACT_GRANT: NSG-5049
CONTRACT_GRANT: NSF ATM-88-20452
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available