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Efficient Tm-Fiber-Pumped Ho:YLF Laser System for Coherent LIDAR Applications, Phase I

Metadata Updated: November 12, 2020

We propose to employ a recently developed, efficient, high-power, heavily-doped Tm:silica-fiber technology as a high-gain fiber pre-amplifier and as a fiber-laser-pump for the laser crystal Ho:YLF to provide a 2050-nm source for remote-sensing applications, including coherent DIAL systems. The resultant source has the potential for much higher electrical efficiency than current technology. One of our innovations is the use of a directly diode-pumped, heavily-doped Tm:silica fiber laser as the pump, to provide efficient conversion of electrical power to optical pump power. The second innovation is the use of heavily-doped Tm:silica fiber as a high-gain pre-amplifier for a low-power 2050-nm master oscillator. The third innovation is made possible by the high gain available from our fiber-laser-pumped Ho:YLF amplifiers. In contrast to seeded oscillators, our laser system has enough gain to amplify a cw, externally-modulated, single-frequency laser, allowing control of the pulsewidth and wavelength while preserving the frequency stability of the source. The use of a Tm-fiber preamplifier simplifies the system architecture and increases the system efficiency. In the Phase I effort, we plan on demonstrating the amplification of a cw, single-frequency laser, as well as developing designs for complete compact, efficient mJ-level lidar sources.

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Metadata Created Date November 12, 2020
Metadata Updated Date November 12, 2020

Metadata Source

Harvested from NASA Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date November 12, 2020
Metadata Updated Date November 12, 2020
Publisher Space Technology Mission Directorate
Unique Identifier Unknown
Identifier TECHPORT_6975
Data First Published 2008-07-01
Data Last Modified 2020-01-29
Public Access Level public
Bureau Code 026:00
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Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
Harvest Source Title NASA Data.json
Homepage URL
Program Code 026:027
Source Datajson Identifier True
Source Hash 862b2626244032a61a9392e4a83d033c2e66259c
Source Schema Version 1.1

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