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Two-photon lidar technique for remote sensing of atomic oxygenA technique is proposed for remote sensing of atomic oxygen by laser excitation of a two-photon transition. Excitation at 2256 A and subsequent fluorescence at 8447 A allow probing of the mesosphere and lower thermosphere without interference by absorption. The two-photon excitation rate is calculated, and its dependence on laser power, duration, and linewidth is discussed. Values are given for remote sensing from a spacecraft at 200 km ranging down to 80 km with 1-km range resolution. Accuracies of better than 10% are expected with a 1 J, a 20-psec excitation pulse and a 1-sq-m collecting telescope.
Document ID
19790038271
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Mcllrath, T. J. (Maryland Univ. College Park, MD, United States)
Wilkerson, T. D. (Maryland, University College Park, Md., United States)
Hudson, R. (Maryland Univ. College Park, MD, United States)
Aikin, A. (NASA Goddard Space Flight Center Laboratory for Planetary Atmospheres, Greenbelt, Md., United States)
Date Acquired
August 9, 2013
Publication Date
February 1, 1979
Publication Information
Publication: Applied Optics
Volume: 18
Subject Category
Geophysics
Accession Number
79A22284
Funding Number(s)
CONTRACT_GRANT: NAS5-24130
CONTRACT_GRANT: NAS5-22537
Distribution Limits
Public
Copyright
Other

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