Highly efficient optical parametric amplifier tunable from near- to mid-IR for driving extreme nonlinear optics in solidsстатья
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 23 января 2018 г.
Аннотация:We have developed the robust optical parametric amplifier (OPA) based on three AGS crystals pumping by Cr:Forsterite GW femtosecond laser system and generating 150-fs pulses in dual bands 1.6-2.0 µm (signal wave) and 3.5-5.5 µm (idler wave). Introducing negative prechirp to the pump, combined efficiency in two waves more than 10% was achieved with signal energy up to 110 μJ around 1.9 µm and idler energy up to 43 μJ in the vicinity of 4 μm. Operation parameters of the system (intensity up to 90 TW/cm2) makes OPA a promising tool for driving nonlinear optical phenomena including generation of optical harmonics and laser-induced extreme states of matter in solids and liquids. As a proof of principal, we generated high harmonics and sum frequencies in 5 mm thick polycrystalline ZnSe.