Work

Optimizing attosecond-pulse generation in solids by modulating electronic dynamics with a monochromatic laser field

Year: 2025

Type: article

Abstract: A practical approach is proposed for efficiently generating ultrashort attosecond pulses from realistic solid-state materials, aiming to optimize pulse width effectively. By adjusting the photon energy while maintaining a constant peak electric field, this strategy modulates the peak vector potential and laser field period, thereby controlling the high harmonic cutoff energy and the time-domain emission characteristics of the harmonics. The field-driven electronic dynamics lead to a nonmonotonic variation in both the intensity and the duration of the generated attosecond pulses. The light field frequency can be adjusted to yield the optimal pulse. Beyond the primary demonstration with hexagonal boron nitride as a prototypical material, significant pulse width optimization has been achieved across a range of different materials. This straightforward and versatile strategy shows promise for application in solid-state materials, offering new pathways to promote high harmonic performance.

Source: Physical Review A

DOI: 10.1103/physreva.111.023521

Authors: Xinyuan Zhang, Shiqi Hu, Mengxue Guan, Sheng Meng

Institutions: Chinese Academy of Sciences, Institute of Physics, University of Chinese Academy of Sciences, Beijing Institute of Technology, Songshan Lake Materials Laboratory

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: green

Funders: National Natural Science Foundation of China, Chinese Academy of Sciences, Ministry of Science and Technology of the People's Republic of China, Beijing Institute of Technology