Abstract
Concept of a solid-state femtosecond laser system with a multigigawatt power level in the 4–5 μm range has been proposed. The system contains an ultrashort pulse seeder, a two-stage chirped pulse amplifier based on a broadband Fe2+:ZnSe active element with optical pumping by a YSGG:Cr:Er laser, and an output stage that provides additional nonlinear optical compression of an amplified pulse to approximately 30 fs in a dielectric CaF2 medium with anomalous group velocity dispersion in this spectral range.
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Original Russian Text © B.G. Bravy, V.M. Gordienko, V.I. Kozlovsky, Yu.V. Korostelin, F.V. Potemkin, Yu.P. Podmar’kov, A.A. Podshivalov, V.T. Platonenko, V.V. Firsov, M.P. Frolov, 2016, published in Izvestiya Rossiiskoi Akademii Nauk. Seriya Fizicheskaya, 2016, Vol. 80, No. 4, pp. 489–494.
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Bravy, B.G., Gordienko, V.M., Kozlovsky, V.I. et al. High-power mid-IR (4–5 μm) femtosecond laser system with a broadband amplifier based on Fe2+:ZnSe. Bull. Russ. Acad. Sci. Phys. 80, 444–449 (2016). https://doi.org/10.3103/S1062873816040055
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DOI: https://doi.org/10.3103/S1062873816040055