1.65um Pulsed Laser for Space Based Winds, Phase I

Metadata Updated: February 28, 2019

Fibertek, Inc. will develop a single-frequency, Er:YAG laser transmitter to advance the technological readiness level (TRL) of a key technology component of the 3D wind measurements identified in the recent Earth science decadal survey [HTML_REMOVED]Thriving on Our Changing Planet: A Decadal Strategy for Earth Observation from Space[HTML_REMOVED].[HTML_REMOVED] The Er:YAG development will advance the technology of a space-based wind lidar system by focusing on developing a compact, efficient diode pumped transmitter that is conductively cooled.[HTML_REMOVED] Current efficient 2[HTML_REMOVED]m systems are pumped by fiber lasers to take advantage of the high brightness source, but this tends to increase the packaging foot print.[HTML_REMOVED] To maintain long pulsewidths [HTML_REMOVED]100ns, the 2[HTML_REMOVED]m systems cavities are typically greater than 2 meters in length. [HTML_REMOVED]By working at higher repetition rates (500Hz or above) than are typically targeted in 2[HTML_REMOVED]m systems, Fibertek will take advantage of the long storage time of Er:YAG to maintain efficient operation, while operating at longer pulse lengths in a shorter cavity (with respect to Ho:YLF systems of similar pulse lengths) due to the low gain of the Er:YAG.[HTML_REMOVED] Fibertek[HTML_REMOVED]s approach will be based on an Er:YAG resonator operating at 1645nm and resonantly pumped by high brightness semiconductor laser diodes.

This program will build on successful Er:YAG work at Fibertek focused on methane and water vapor lidars.[HTML_REMOVED] These systems are 7-10W systems optimized for operation at higher repetition rates.[HTML_REMOVED] The Phase I work will demonstrate a high power ([HTML_REMOVED]12.5W) oscillator optimized for 500Hz operation with a Technology Readiness Level 4 (TRL-4) for a coherent wind lidar. In Phase II we will develop a hardened brassboard version of the laser that would be suitable for airborne systems. We will also perform a trade study on how to achieve the highest damage threshold coatings at 1.6455 [HTML_REMOVED]m.

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Public: This dataset is intended for public access and use. License: U.S. Government Work

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Metadata Created Date February 28, 2019
Metadata Updated Date February 28, 2019

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Harvested from NASA Data.json

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Resource Type Dataset
Metadata Created Date February 28, 2019
Metadata Updated Date February 28, 2019
Publisher Space Technology Mission Directorate
Unique Identifier TECHPORT_94455
Maintainer Email
Public Access Level public
Bureau Code 026:00
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Harvest Source Id 39e4ad2a-47ca-4507-8258-852babd0fd99
Harvest Source Title NASA Data.json
Data First Published 2019-01-01
Homepage URL https://techport.nasa.gov/view/94455
License http://www.usa.gov/publicdomain/label/1.0/
Data Last Modified 2018-09-07
Program Code 026:027
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Source Hash 4514a89813d1b572a807ebd6ad929ffa06c1cb73
Source Schema Version 1.1

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