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Proceedings Paper

Efficient Pr3+ laser material excitation by three-for-one cross-relaxation
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Paper Abstract

Pr3+ has three excited manifolds with the right energy spacings for emission between 3.5 and 5.5 microns, and can be excited efficiently using laser diodes developed for telecommunications. In the potential laser crystal Pr:RbPb2Cl5, we have observed strikingly strong fluorescence in this wavelength range following 1.53-micron excitation. Careful analysis indicates this must be due to two cross-relaxation processes that, together, efficiently convert one Pr3+ initially excited to the 3F3 manifold into three ions excited to the 3H5 manifold. This newly discovered “three-for-one” crossrelaxation process in Pr3+ may greatly enhance its utility as a mid-infrared laser ion.

Paper Details

Date Published: 1 May 2017
PDF: 6 pages
Proc. SPIE 10192, Laser Technology for Defense and Security XIII, 1019209 (1 May 2017); doi: 10.1117/12.2264840
Show Author Affiliations
Larry D. Merkle, U.S. Army Research Lab. (United States)
Mark Dubinskii, U.S. Army Research Lab. (United States)

Published in SPIE Proceedings Vol. 10192:
Laser Technology for Defense and Security XIII
Mark Dubinskii; Stephen G. Post, Editor(s)

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