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Proceedings Paper

Progress on laser technology for proposed space-based sodium lidar
Author(s): Michael A. Krainak; Anthony W. Yu; Steven X. Li; Yingxin Bai; Kenji Numata; Jeffrey R. Chen; Molly E. Fahey; Frankie Micalizzi; Oleg A. Konoplev; Diego Janches; Chester S. Gardner; Graham R. Allan
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Paper Abstract

We propose a nadir-pointing space-based Na Doppler resonance fluorescence LIDAR on board of the International Space Station (ISS). The science instrument goal is temperature and vertical wind measurements of the Earth Mesosphere Lower Thermosphere (MLT) 75-115 km region using atomic sodium as a tracer. Our instrument concept uses a high-energy laser transmitter at 589 nm and highly sensitive photon counting detectors that permit range-resolved atmospheric-sodium-temperature profiles. The atmospheric temperature is deduced from the linewidth of the resonant fluorescence from the atomic sodium vapor D2 line as measured by our tunable laser. We are pursuing high power laser architectures that permit limited day time sodium lidar observations with the help of a narrow bandpass etalon filter. We discuss technology, prototypes, risks and trades for two 589 nm wavelength laser architectures: 1) Raman laser 2) Sum Frequency Generation. Laser-induced saturation of atomic sodium in the MLT region affects both sodium density and temperature measurements. We discuss the saturation impact on the laser parameters, laser architecture and instrument trades. Off-nadir pointing from the ISS causes Doppler shifts that effect the sodium spectroscopy. We discuss laser wavelength locking, tuning and spectroscopic-line sampling strategy.

Paper Details

Date Published: 15 February 2018
PDF: 11 pages
Proc. SPIE 10511, Solid State Lasers XXVII: Technology and Devices, 105111E (15 February 2018); doi: 10.1117/12.2290471
Show Author Affiliations
Michael A. Krainak, NASA Goddard Space Flight Ctr. (United States)
Anthony W. Yu, NASA Goddard Space Flight Ctr. (United States)
Steven X. Li, NASA Goddard Space Flight Ctr (United States)
Yingxin Bai, NASA Goddard Space Flight Ctr. (United States)
Kenji Numata, NASA Goddard Space Flight Ctr. (United States)
Jeffrey R. Chen, NASA Goddard Space Flight Ctr. (United States)
Molly E. Fahey, NASA Goddard Space Flight Ctr. (United States)
Frankie Micalizzi, NASA Goddard Space Flight Ctr. (United States)
Oleg A. Konoplev, SSAI (United States)
Diego Janches, NASA Goddard Space Flight Ctr. (United States)
Chester S. Gardner, Univ. of Illinois (United States)
Graham R. Allan, Sigma Space Corp. (United States)


Published in SPIE Proceedings Vol. 10511:
Solid State Lasers XXVII: Technology and Devices
W. Andrew Clarkson; Ramesh K. Shori, Editor(s)

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