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Single Frequency, Pulsed Laser Diode Transmitter for Dial Water Vapor Measurements at 935nmWe report a tunable, single frequency, narrow linewidth, pulsed laser diode transmitter at 935.68nm for remote sensing of atmospheric water vapor. The transmitter consists of a CW, tunable, external cavity diode laser whose output is amplified 2OdB using a tapered diode amplifier. The output is pulsed for range resolved DIAL lidar by pulsing the drive current to the diode amplifier at 4kHz with a .5% duty cycle. The output from the transmitter is 36OnJ/pulse and is single spatial mode. It maintains a linewidth of less than 25MHz as its wavelength is tuned across the water vapor absorption line at 935.68nm. The transmitter design and its use in a water vapor measurement will be discussed.
Document ID
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Switzer, Gregg W.
(Montana State Univ. Bozeman, MT United States)
Cornwell, Donald M., Jr.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Krainak, Michael A.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Abshire, James B.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Rall, Johnathan A. R.
(NASA Langley Research Center Hampton, VA United States)
Date Acquired
August 18, 2013
Publication Date
July 1, 1998
Publication Information
Publication: Nineteenth International Laser Radar Conference
Issue: Part 2
Subject Category
Lasers And Masers
Funding Number(s)
PROJECT: RTOP 344-36-10
PROJECT: RTOP 223-01-03
Distribution Limits
Work of the US Gov. Public Use Permitted.
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