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Proceedings Paper

3.9-4.8μm gain-switched lasing of Fe:ZnSe at room temperature
Author(s): J. Kernal; V. V. Fedorov; A. Gallian; S. B. Mirov; V. V. Badikov
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Paper Abstract

Absorption and luminescence properties of Fe:ZnSe and Fe:Cr:ZnSe crystals in the middle infrared spectral range were studied at room and low temperatures. Room temperature emission cross section of 5T2->5E transmission of iron ions was estimated from spectroscopic measurements. Middle infrared emission of Fe2+ in ZnSe was studied under three different regimes of excitation: direct optical (2.92 μm) excitation of 5T2 first excited state of Fe2+, excitation via 5E level of Cr co-dopant (1.56 μm), and excitation via photo-ionization transition of Fe2+ (0.532 μm). For the first time the energy transfer from Cr2+ (5E level) to Fe2+ (5T2 level) under 1.56 μm wavelength excitation was observed and resulted in simultaneous room temperature emission of Fe:Cr:ZnSe crystal over ultra-broadband spectral range of 2-3 and 3.5-5 μm. We also report the first observation of middle infrared emission at 4.5 μm induced by 2+->3+->2+ ionization transitions of iron ions in Fe2+:ZnSe. The first room temperature gain-switched lasing of Fe:ZnSe crystal at 4.4 μm wavelength was demonstrated. Room temperature tunable oscillation of Fe:ZnSe crystal over 3.9-4.8 μm spectral range was realized.

Paper Details

Date Published: 28 February 2006
PDF: 9 pages
Proc. SPIE 6100, Solid State Lasers XV: Technology and Devices, 61000F (28 February 2006); doi: 10.1117/12.646821
Show Author Affiliations
J. Kernal, The Univ. of Alabama at Birmingham (United States)
V. V. Fedorov, The Univ. of Alabama at Birmingham (United States)
A. Gallian, The Univ. of Alabama at Birmingham (United States)
S. B. Mirov, The Univ. of Alabama at Birmingham (United States)
V. V. Badikov, Kuban State Univ. (Russia)

Published in SPIE Proceedings Vol. 6100:
Solid State Lasers XV: Technology and Devices
Hanna J. Hoffman; Ramesh K. Shori, Editor(s)

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