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Start Over Author "Dimitrios Rompotis" Journal optics letters
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1. Efficient generation of below-threshold harmonics for high-fidelity multi-photon physics in the VUV spectral range

Author

Fawad Karimi, Markus Drescher, Dimitrios Rompotis, Thomas Gebert, and Marek Wieland

Subjects
Physics, Range (particle radiation), Photon, business.industry, Pulse duration, Atomic and Molecular Physics, and Optics, Pulse (physics), Optics, Harmonics, Temporal resolution, Ionization, Physics::Atomic and Molecular Clusters, Atomic physics, business, Ultrashort pulse
Abstract

We demonstrate the generation of microjoule level, sub-20-fs, Ti:Sa fifth-harmonic pulses utilizing a loose-focusing geometry in a long Ar gas cell. The VUV pulses centered at 161.8 nm reach pulse energies of 1.1 μJ per pulse, while the corresponding pulse duration is measured with a second-order, fringe-resolved autocorrelation scheme to be 18±1 fs. Nonresonant, two-photon ionization of Kr and three-photon ionization of Ne verify the fifth-harmonic pulse high-intensity content and indicate the feasibility of multi-photon VUV pump-VUV probe studies of ultrafast atomic and molecular dynamics.

Published
2015

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