Circularly Polarized Attosecond Pulses Enabled by an Azimuthal Phase and Polarization Grating

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Abstract

High-harmonic generation (HHG) is an extreme nonlinear optical process that can map the properties of an infrared driving laser beam onto short wavelength attosecond pulse trains. However, current techniques for generating circularly polarized high harmonics for probing magnetic materials and chiral systems have limitations: two-color collinear counter-rotating driving lasers result in a low cutoff photon energy, while single-color noncollinear counter-rotating schemes suffer from low conversion efficiency.

Year of Publication
2025
Date Published
2025-01
Journal Title
ACS Photonics
Volume
12
Issue
1
Start Page or Article ID
495-504,
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