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arXiv · 1002.4582

Generation of terahertz radiation from ionizing two-color laser pulses in Ar filled metallic hollow waveguides

I. Babushkin·S. Skupin·J. Herrmann
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Abstract

The generation of THz radiation from ionizing two-color femtosecond pulses propagating in metallic hollow waveguides filled with Ar is numerically studied. We observe a strong reshaping of the low-frequency part of the spectrum. Namely, after several millimeters of propagation the spectrum is extended from hundreds of GHz up to ~150 THz. For longer propagation distances, nearly single-cycle near-infrared pulses with wavelengths around 4.5 um are obtained by appropriate spectral filtering, with an efficiency of up to 0.25%.

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I. Babushkin, S. Skupin, J. Herrmann. 2010-02-24. Generation of terahertz radiation from ionizing two-color laser pulses in Ar filled metallic hollow waveguides. https://doi.org/10.1364/oe.18.009658

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