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2-Micron Diode-Pumped Pulsed Laser Transmitter for SPARCLE: A Coherent Wind Lidar Shuttle MissionTo enable a tropospheric vector wind velocity profiling from space with a pulsed Doppler lidar, a diode-pumped, room temperature Ho:Tm:YLF coherent pulsed transmitter has been developed at NASA Langley Research Center. This pulsed laser transmitter will be a part of coherent wind lidar shuttle mission SPARCLE. The acronym stands for SPAce Readiness Coherent Lidar Experiment and is primarily a technology demonstration mission and is expected to fly in 2001 as NASA's New Millennium Program (NMP) second Earth Orbiter (EO-2) mission. The laser transmitter for SPARCLE is a Ho:Tm:YLF power oscillator operating at eye-safe wavelength of 2.05 microns. The Q-switched output energy is 125 mJ at six Hz, and it has a near-transform limited beam with a pulse width of 170 ns. The high power and high beam quality of this laser makes it well suited as a coherent wind lidar transmitter on a space platform. When the output of this power oscillator is amplified by using four diode-pumped Ho:Tm:YLF amplifiers, an output energy of 600 mJ at 10 Hz is achieved. This is the highest energy ever produced at 10 Hz, and is at least an order of magnitude greater than previously achieved for a 2-micron diode-pumped laser at room temperature.
Document ID
Acquisition Source
Langley Research Center
Document Type
Conference Paper
Singh, Upendra N.
(NASA Langley Research Center Hampton, VA United States)
Yu, Jirong
(Science and Technology Corp. Hampton, VA United States)
Petros, Mulugeta
(Science and Technology Corp. Hampton, VA United States)
Barnes, Norman P.
(NASA Langley Research Center Hampton, VA United States)
Phillips, Mark W.
(Coherent Technologies, Inc. Lafayette, CO 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
Distribution Limits
Work of the US Gov. Public Use Permitted.
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