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Proceedings Paper

Amplification of Q-switched pulses to 400 mJ at 2051 nm using a conduction-cooled laser pump module
Author(s): Mark W. Phillips; J. Pete Tucker
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Paper Abstract

CTI has demonstrated Q-switched pulse amplification in Tm,Ho:YLF at >400 mJ output pulse energy for 60 mJ of input energy using a single stage 2-pass (on-axis) amplifier. The pulse duration was 800 ns. A double-pass gain of 10 was demonstrated for 35 mJ input pulse energy. The optical-to-optical efficiency for the 2-pass amplifier was 8%. This is the first demonstration of multiple hundred millijoule output and >10 times double-pass amplification in an all conduction-cooled two micron laser pump module: both the laser rod, operating at 200 K, and the pump laser diodes, operating at 300 K, are conduction-cooled to embedded cold-plates that remove heat from the pump module. As such, this design is directly compatible with the use of heatpipe and space radiator technology for thermal management in a space environment.

Paper Details

Date Published: 12 January 2005
PDF: 12 pages
Proc. SPIE 5653, Lidar Remote Sensing for Industry and Environmental Monitoring V, (12 January 2005); doi: 10.1117/12.572463
Show Author Affiliations
Mark W. Phillips, Coherent Technologies, Inc. (United States)
J. Pete Tucker, Coherent Technologies, Inc. (United States)

Published in SPIE Proceedings Vol. 5653:
Lidar Remote Sensing for Industry and Environmental Monitoring V
Upendra N. Singh; Kohei Mizutani, Editor(s)

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