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  3. Broadband mid-infrared pulses from potassium titanyl arsetate/zinc germanium phosphate optical paramtric amplifier pumped by Tm, Ho-fiber-seeded Ho:YAG chirped-pulse amplifier

Broadband mid-infrared pulses from potassium titanyl arsetate/zinc germanium phosphate optical paramtric amplifier pumped by Tm, Ho-fiber-seeded Ho:YAG chirped-pulse amplifier

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Broadband mid-infrared pulses from potassium titanyl arsetate/zinc germanium phosphate optical paramtric amplifier pumped by Tm, Ho-fiber-seeded Ho:YAG chirped-pulse amplifier

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  • Author: P. Malevich, T. Kanai, H. Hoogland, R. Holzwarth, A. Baltuška, & A. Pugžlys
We present a concept of a white-light-seeded-cascaded mid-infrared (mid-IR) optical parametric amplifier (OPA) based on potassium titanyl arsenate and zinc germanium phosphate nonlinear optical crystals and producing 100-μJ level pulses centered at 5300 nm, with the spectrum supporting four-optical-cycle pulse duration. The OPA is pumped by 2090-nm master oscillator/power amplifier based on a Tm,Ho-fiber laser seeder and a Ho:YAG regenerative amplifier delivering 3.8-mJ sub-ps pulses at a repetition rate of 1 kHz.

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