| Autor: |
Wu J, Che J, Zhang F, Chen C, Li W, Xin G, Chen Y |
| Jazyk: |
angličtina |
| Zdroj: |
Optics express [Opt Express] 2023 Jun 19; Vol. 31 (13), pp. 21038-21047. |
| DOI: |
10.1364/OE.494098 |
| Abstrakt: |
We study ionization of atoms in strong orthogonal two-color (OTC) laser fields numerically and analytically. The calculated photoelectron momentum distribution shows two typical structures: a rectangular-like one and a shoulder-like one, the positions of which depend on the laser parameters. Using a strong-field model which allows us to quantitatively evaluate the Coulomb effect, we show that these two structures arise from attosecond response of electron inside an atom to light in OTC-induced photoemission. Some simple mappings between the locations of these structures and response time are derived. Through these mappings, we are able to establish a two-color attosecond chronoscope for timing electron emission, which is essential for OTC-based precise manipulation. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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