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Topological light fields for highly non-linear charge quantum dynamics and high harmonic generation

Wätzel, Jonas, Berakdar, Jamal·2020·Optics Express
DOI 10.1364/oe.395590
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Abstract

We study theoretically the electron quantum dynamics in atoms driven by intense IR laser pulses that are phase and/or polarization structured. The extremely non-linear electron dynamics causes high harmonic emission, which we calculate, analyze, and characterize. Results are presented for three different types of structured lasers: radially polarized and azimuthally polarized beams and optical skyrmions. We identify a topological index that is inherent to the driving pulse topology and is taken over by the high harmonics. All harmonics are found to have the same topological index. For vector IR pulses as driving fields, the far-field emitted beam tightens with a higher topological order and remains unchanged when the atom is driven by an optical skyrmion.

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  • Momentum-space spin textures in photonic systems promise insights related to Dirac monopoles and photon spin quantization, whereby magnetic monopole charge quantization in momentum space can arise from spin-1 skyrmion properties of polaritons.

    “Momentum-space spin textures in photonic systems promise intriguing physical insights related to Dirac monopoles and photon spin quantization, whereby the magnetic monopole charge quantization in momentum space can arise from spin-1 skyrmion properties of polaritons.[88].”

    From Optical skyrmions and other topological quasiparticles of light (2024) · cites this paper as [88]

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Research works printed but not linked: 31

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Metadata

Authors
Wätzel, J., & Berakdar, J.
Venue
Optics Express
Publisher
Optica Publishing Group
Published
2020-06-17
Volume
28
Issue
13
Pages
19469
ISSN
1094-4087
DOI
10.1364/oe.395590
Cited by
11
References
2
Language
en
Licence
Funders
Deutsche Forschungsgemeinschaft (SPP1840, TRR227, WA 4352/2-1)

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