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Efficient 2-micron Ho lasers based on fluoride crystal hosts
Author(s): Bradley R. DeShano; Gary Cook; Thomas R. Harris; Hans P. Jenssen; Arlete Cassanho
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Paper Abstract

Highly efficient, water cooled, resonantly pumped Ho3+ fluoride lasers have been demonstrated at 2 μm. The laser materials, 0.5 at.% Ho:YLF, 0.5 at.% Ho:BYF, and 0.5 at.% Ho:BaYLuF, were resonantly pumped with an IPG Tm:fiber laser operating at 1940 nm. Laser action occurred on the 5I7 to the 5I8 manifold with center wavelengths of 2062.6 nm, 2074.0 nm, and 2075.2 nm respectively. Continuous wave (CW) operation of 0.5% Ho:BYF achieved a maximum efficiency of approximately 68% with a 50% reflective output coupler. Pulsed operation of this laser system produced 4 mJ pulses at 500 Hz with a slope efficiency of 38%.

Paper Details

Date Published: 4 May 2018
PDF: 6 pages
Proc. SPIE 10637, Laser Technology for Defense and Security XIV, 1063712 (4 May 2018); doi: 10.1117/12.2306514
Show Author Affiliations
Bradley R. DeShano, KBRwyle (United States)
Gary Cook, Air Force Research Lab. (United States)
Thomas R. Harris, Azimuth Corp. (United States)
Hans P. Jenssen, AC Materials Inc. (United States)
Arlete Cassanho, AC Materials Inc. (United States)

Published in SPIE Proceedings Vol. 10637:
Laser Technology for Defense and Security XIV
Mark Dubinskiy; Timothy C. Newell, Editor(s)

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