Chromium doped ZnSe and ZnS gain media for optically and electrically pumped mid-IR lasers

C. Kim; J. M. Peppers; D. V. Martyshkin; V. V. Fedorov; S. B. Mirov

doi:10.1117/12.809872

27 February 2009 Chromium doped ZnSe and ZnS gain media for optically and electrically pumped mid-IR lasers

C. Kim, J. M. Peppers, D. V. Martyshkin, V. V. Fedorov, S. B. Mirov

Proceedings Volume 7193, Solid State Lasers XVIII: Technology and Devices; 71932R (2009) https://doi.org/10.1117/12.809872
Event: SPIE LASE: Lasers and Applications in Science and Engineering, 2009, San Jose, California, United States

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.

Citation Download Citation

C. Kim, J. M. Peppers, D. V. Martyshkin, V. V. Fedorov, and S. B. Mirov "Chromium doped ZnSe and ZnS gain media for optically and electrically pumped mid-IR lasers", Proc. SPIE 7193, Solid State Lasers XVIII: Technology and Devices, 71932R (27 February 2009); https://doi.org/10.1117/12.809872

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