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We demonstrate an efficient amplification of the broadband tunable (from 3.8 μm up to 4.8 μm) mid-IR femtosecond (∼200 fs) seed pulse in optically pumped Fe2+:ZnSe amplifier [1]. The experimental setup is sketched in Fig. 1a. Seed radiation was generated in two-stage AGS-based optical parametric amplifier pumped by Cr:forsterite laser [2]. Mid-IR output radiation with energy up to 1 μJ was then directed...
Femtosecond mid-IR laser sources are of great demand due to its usefulness in a number of applications ranging from strong field phenomena to medical and environmental sensing. Nowadays devices based on OPA and OPCPA techniques had become a typical approach to produce mid-IR radiation. However, with Ti:Sapphire pump laser efficiency of OPAs in 4–5 μm range is rather low mainly due to the lack of suitable...
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