Abstract
Cr2+-doped chalcogenide crystals are efficient and broad band tunable solid-state laser materials for the infrared spectral range between 2 and 3 μm. Pulsed, continuous wave, gain-switched, mode-locked and diode-pumped laser operation have been demonstrated in the recent years. Possible applications of these mid-infrared lasers include scientific research, remote sensing, trace gas analysis, medicine, biology, materials processing, and ultrashort pulse generation. In this paper an overview about the material properties and the laser characteristics of these newly developed laser materials will be given, including the recent results.
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