Work

Attosecond pulse generation from Weyl semimetals

Year: 2026

Type: article

Abstract: The generation of attosecond pulses from higher-order harmonics is an essential milestone toward enabling time-resolved spectroscopy of electronic processes in matter on the attosecond timescale. The avenue for high-harmonic generation from solids has proliferated since its discovery a decade ago. However, isolated attosecond pulse generation from solids remains scarce. We report a theoretical proposal that leverages Weyl semimetals for highly efficient attosecond pulse generation in the far-ultraviolet region. The generation of isolated attosecond pulses from Weyl semimetals is achieved using two-color laser pulses, which generate a broad higher-harmonic plateau ranging from 3 to 11 eV. Attosecond pulses with comparable durations – spanning approximately 500 to 900 as – are generated in both collinear and orthogonal configurations of the two-color fields. The strength and duration of the attosecond pulses can be optimized by tailoring the polarization direction and relative strength of the two-color field.

Source: Physical review. B./Physical review. B

DOI: 10.1103/6nxz-kgxd

Authors: Prachi Venkat, Amar Bharti, Gopal Dixit

Institutions: Indian Institute of Technology Bombay, Okinawa Institute of Science and Technology Graduate University, Max-Born-Institute for Nonlinear Optics and Short Pulse Spectroscopy

Language: English

Topic: Laser-Matter Interactions and Applications

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Funder: Uppsala Universitet

OpenAlex ID: W7133554227

FWCI: 5.688

Cites: 93

Cited by: 2

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