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Proceedings Paper

Dual-phase Er:Y2O3/MgO nanocomposites for mid-Infrared solid state lasers
Author(s): Zackery D. Fleischman; Victoria L. Blair; Nicholas Ku; Larry D. Merkle
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Paper Abstract

In the pursuit of efficient mid-Infrared laser host materials, we developed a dual-phase nanocomposite composed of a majority species (MgO) which provides high thermal conductivity and a rare earth doped minority species (Er:Y2O3) featuring a low maximum-phonon energy. This material was prepared using a co-precipitation method where both components are synthesized together for intimate mixing on the smallest scale. Preparation parameters were tuned to achieve a small crystallite size in order to limit scattering at the grain boundaries between the two different species. Optical characterization of the prepared materials included percent transmission (%T) as well as Raman measurements and Er fluorescence spectroscopy. Once suitable transmissivity was achieved, %T results were compared to Mie scattering calculations to gauge the average grain size in the material; and we determined the smallest average Y2O3 grain sizes achieved in our materials so far was 80 nm in diameter.

Paper Details

Date Published: 4 May 2018
PDF: 11 pages
Proc. SPIE 10637, Laser Technology for Defense and Security XIV, 106370Z (4 May 2018); doi: 10.1117/12.2311470
Show Author Affiliations
Zackery D. Fleischman, U.S. Army Research Lab. (United States)
Victoria L. Blair, U.S. Army Research Lab. (United States)
Nicholas Ku, U.S. Army Research Lab. (United States)
Larry D. Merkle, U.S. Army Research Lab. (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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