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The superluminescence of a Fe 2+ :ZnSe crystal was obtained in the region from 4.6 to 4.7 μm upon transverse pumping by high-power laser radiation at 2.94 μm. The superluminescence pulse energy was ∼1 mJ upon pumping by a 15-mJ pulse. A ZnSe crystal was doped with Fe 2+ ions by the diffusion method under the conditions of the thermodynamic equilibrium of phases.
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Il'ichev et al. (2008) studied this question.
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