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Proceedings Paper

Chromium doped ZnSe and ZnS gain media for optically and electrically pumped mid-IR lasers
Author(s): C. Kim; J. M. Peppers; D. V. Martyshkin; V. V. Fedorov; S. B. Mirov
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Paper Abstract

We report methods of fabrication and laser-spectroscopic characterization of mid-IR gain media based on micron size Cr2+:ZnSe/ZnS powders, as well as Cr2+:ZnSe/ZnS doped fluorocarbon polymer films, and perfluorocarbon liquids. All samples demonstrated strong mid-IR luminescence over 2000-3000nm spectral range under optical 1700nm excitation. The random lasing of the doped liquids and polymer films was realized with pump energy density of 100 and 15mJ/cm2, respectively. Previously we have demonstrated mid-IR electroluminescence of Cr:ZnSe with n-conductivity provided by thermal diffusion of Al and Zn. However, the formation of conductivity was accompanied by compensation of the Cr2+ optical centers and relatively weak chromium electroluminescence. In this paper we report study of the Cr2+ compensation in the crystals co-doped with donor and acceptor impurities. Optical and electrical characterization of Cr:ZnSe crystals with Ag, Cu, Al, In, and Zn co-dopants were studied to optimize mid-IR electroluminescens of the Cr2+ ions. The best results were obtained with p-conductive Ag:Cr:ZnSe samples featuring a low 600 Ωcm resistivity. First mid-IR electroluminescence in presumable p-type Ag:Cr:ZnSe was demonstrated, which could prove valuable for developing laser diodes that function in this spectral region.

Paper Details

Date Published: 27 February 2009
PDF: 11 pages
Proc. SPIE 7193, Solid State Lasers XVIII: Technology and Devices, 71932R (27 February 2009); doi: 10.1117/12.809872
Show Author Affiliations
C. Kim, Univ. of Alabama at Birmingham (United States)
J. M. Peppers, Univ. of Alabama at Birmingham (United States)
D. V. Martyshkin, Univ. of Alabama at Birmingham (United States)
V. V. Fedorov, Univ. of Alabama at Birmingham (United States)
S. B. Mirov, Univ. of Alabama at Birmingham (United States)

Published in SPIE Proceedings Vol. 7193:
Solid State Lasers XVIII: Technology and Devices
W. Andrew Clarkson; Norman Hodgson; Ramesh K. Shori, Editor(s)

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