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Comparison of eye-safe solid state laser DIAL with passive gas filter correlation measurements from aircraft and spacecraftDifferential Absorption Lidar (DIAL) using solid state Ti:sapphire lasers finds current application in the NASA/LASE Project for H2O vapor measurements in the approximately = 0.820 micron region for the lower and mid-troposphere and in potential future applications in planned measurements of the approximately = 0.940 micron region where both strong and weak absorption lines enables measurements throughout the troposphere and lower stratosphere. The challenge exists to perform measurements in the eye-safe greater than 1.5 micron region. A comparison between DIAL and passive Gas Filter Correlation Radiometer (GFCR) measurements is made. The essence of the differences in signal to noise ratio for DIAL and passive GFCR measurements is examined. The state of the art of lasers and optical parametric oscillators (OPO's) is discussed.
Document ID
Document Type
Conference Paper
Hess, Robert V.
(NASA Langley Research Center Hampton, VA, United States)
Staton, Leo D.
(NASA Langley Research Center Hampton, VA, United States)
Wallio, H. Andrew
(NASA Langley Research Center Hampton, VA, United States)
Wang, Liang-Guo
(College of William and Mary Williamsburg, VA., United States)
Date Acquired
September 6, 2013
Publication Date
July 1, 1992
Publication Information
Publication: 16th International Laser Radar Conference, Part 2
Subject Category
Accession Number
Distribution Limits
Work of the US Gov. Public Use Permitted.

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