11 May 2017 Gigawatt mid-IR (4-5 μm) femtosecond hybrid Fe2+:ZnSe laser system
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Abstract
We demonstrate a first-of-its-kind efficient chirped pulse amplification of broadband mid-IR (4-5 μm) femtosecond seed pulse (230 ps, 4μJ) generated in AgGaS2 based OPA driven by Cr:forsterite laser in multi-pass Fe2+:ZnSe amplifier optically pumped by solid-state Q-switched Cr:Yb:Ho:YSGG laser (2.85 μm, 30mJ, 5Hz, 0.6 J/cm2). The system delivers 1.2 mJ at pulse duration of 230 ps. Straightforward compression to 150 fs pulse is achievable with 70% efficiency using diffraction grating pair with peak power of about 6 GW. Further non-linear compression in a bulk CaF2 due to the SPM and anomalous GVD should provide the enhancement of peak power up to 20 GW. Possible routes to reach sub-TW and even TW power level in mid-IR are discussed.
Conference Presentation
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F. V. Potemkin, F. V. Potemkin, E. A. Migal, E. A. Migal, A. V. Pushkin, A. V. Pushkin, B. G. Bravy, B. G. Bravy, A. A. Sirotkin, A. A. Sirotkin, V. I. Kozlovsky, V. I. Kozlovsky, Yu. V. Korostelin, Yu. V. Korostelin, Yu. P. Podmar’kov, Yu. P. Podmar’kov, V. V. Firsov, V. V. Firsov, M. P. Frolov, M. P. Frolov, V. M. Gordienko, V. M. Gordienko, } "Gigawatt mid-IR (4-5 μm) femtosecond hybrid Fe2+:ZnSe laser system", Proc. SPIE 10238, High-Power, High-Energy, and High-Intensity Laser Technology III, 102380L (11 May 2017); doi: 10.1117/12.2265721; https://doi.org/10.1117/12.2265721
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