Narrowband lidar technique for sodium temperature and Doppler wind observations of the upper atmosphere

Richard E. Bills; Chester S. Gardner; Chiao Yao She

doi:10.1117/12.55765

1 January 1991 Narrowband lidar technique for sodium temperature and Doppler wind observations of the upper atmosphere

Richard E. Bills, Chester S. Gardner, Chiao Yao She

Author Affiliations +

Optical Engineering, Vol. 30, Issue 1, (January 1991). https://doi.org/10.1117/12.55765

Abstract

We describe a new two-frequency lidar for measuring mesospheric Na temperature profiles that uses a stabilized cw single-mode dye laser oscillator (rms frequency jitter < 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 frequencies by observing the Doppler-free structure of the Na D₂ fluorescence spectrum in a vapor cell. The lidar technique and our initial observations of the temperature profile between 82 and 102 km at Ft. Collins, CO (40.6°N, 105°W) are described. Absolute temperature accuracies at the Na layer peak of better than ±3K with a vertical resolution of 1 km and an integration period of approximately 5 mm were achieved in this initial experiment. Finally, we discuss a multiple frequency technique for the simultaneous measurement of both temperature and Doppler wind profiles.

Citation Download Citation

Richard E. Bills, Chester S. Gardner, and Chiao Yao She "Narrowband lidar technique for sodium temperature and Doppler wind observations of the upper atmosphere," Optical Engineering 30(1), (1 January 1991). https://doi.org/10.1117/12.55765

Published: 1 January 1991

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