Mid-IR (4-5 mu m) femtosecond multipass amplification of optical parametric seed pulse up to gigawatt level in Fe2+:ZnSe with optical pumping by a solid-state 3 mu m laser

作者：Potemkin F V^*; Migal E A; Pushkin A V; Sirotkin A A; Kozlovsky V I; Korostelin Yu V; Podmar'kov Yu P; Firsov V V; Frolov M P; Gordienko V M

来源：Laser Physics Letters, 2016, 13(12): 125403.

DOI：10.1088/1612-2011/13/12/125403

• femtosecond
• optical parametric amplification
• mid-IR
• multi-pass amplifier
• Fe2+:ZnSe crystal

We demonstrate a first-of-its-kind efficient amplification of a broadband tunable (from 3.8 to 4.8 mu m) mid-IR femtosecond seed pulse generated from a AgGaS2-based optical parametric amplifier pumped by a Cr: forsterite laser in a multi-pass Fe2+:ZnSe amplifier optically pumped by a solid-state nanosecond Cr:Yb:Ho:YSGG laser. A total gain of 2000 for an input seed energy of 40 nJ has been obtained. The magnitude of the output energy reaches 80 mu J at a pulse duration of 200 fs.

• 出版日期2016-12