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arXiv · 1703.02565

Combined visible and near-infrared OPA for wavelength scaling experiments in strong-field physics

David T. Lloyd·Kevin O'Keeffe·Adam S. Wyatt·Patrick N. Anderson·Daniel Treacher·Simon M. Hooker
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Abstract

We report the operation of an optical parametric amplifier (OPA) capable of producing gigawatt peak-power laser pulses with tunable wavelength in either the visible or near-infrared spectrum. The OPA has two distinct operation modes (i) generation of >350 uJ, sub 100 fs pulses, tunable between 1250 - 1550 nm; (ii) generation of >190 uJ, sub 150 fs pulses tunable between 490 - 530 nm. We have recorded high-order harmonic spectra over a wide range of driving wavelengths. This flexible source of femtosecond pulses presents a useful tool for exploring the wavelength-dependence of strong-field phenomena, in both the multi-photon and tunnel ionization regimes.

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David T. Lloyd, Kevin O'Keeffe, Adam S. Wyatt, Patrick N. Anderson, Daniel Treacher, Simon M. Hooker. 2017-03-07. Combined visible and near-infrared OPA for wavelength scaling experiments in strong-field physics. https://doi.org/10.1117/12.2250775

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