Issue |
EPL
Volume 148, Number 2, October 2024
|
|
---|---|---|
Article Number | 25001 | |
Number of page(s) | 5 | |
Section | Atomic, molecular and optical physics | |
DOI | https://doi.org/10.1209/0295-5075/ad8679 | |
Published online | 22 October 2024 |
Near-circularly polarized isolated attosecond pulse generation from a current-carrying state of Ar atom by two-color cross-linearly polarized laser fields
1 College of Physics and Electronic Engineering, Northwest Normal University, Key Laboratory of Atomic and Molecular Physics and Functional Materials of Gansu Province - Lanzhou 730070, China
2 College of Electrical Engineering, Northwest Minzu University - Lanzhou, 730030, China
3 College of Electronic Information Engineering, Lanzhou Institute of Technology - Lanzhou 730050, China
Received: 23 April 2024
Accepted: 14 October 2024
We theoretically propose an efficient method to generate near-circularly polarized isolated attosecond (as) pulses (NCP-IAPs) from a current-carrying state of Ar atom driven by two-color cross-linearly polarized laser fields. We find that the ellipticity of high harmonics can be controlled by adjusting the crossing angle of two linearly polarized lasers and the near-circularly polarized supercontinuum harmonics are obtained when the crossing angle is around . Furthermore, we can produce the NCP-IAPs with the ellipticity up to 0.94 and the shortest one achieves 196 as. This work demonstrates the possibility for generating the NCP-IAPs using a current-carrying state of atoms driven by two-color cross-linearly polarized laser fields.
© 2024 EPLA
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