Work

High-Order Harmonic Enhancement in Nanowire by Inhomogeneous Field

Year: 2020

Type: article

Abstract: We theoretically investigate high-order harmonic generation from nanowire in inhomogeneous laser field. By solving the time-dependent Schrödinger equation, the simulated harmonic spectrum exhibits a double-plateau structure. The cutoff of the second plateau is extended and the intensity of the high-order harmonics in the second plateau is increased by about two to three orders of magnitude compared with that from the homogeneous laser field. Moreover, we analyze the influence of the inhomogeneous laser field polarization orientation to the nanowire. It is shown that the intensity of the high-order harmonics in the second plateau can be effectively controlled by varying the inhomogeneity parameter and the laser field polarization orientation to the nanowire. These phenomena are attributed to the time-dependent population of the electron, which has a strong relevance with the intensity of the harmonic.

Source: IEEE Access

DOI: 10.1109/access.2020.3009672

Authors: Stephen Maina Njoroge, Jiapeng Li, Fang Li

Institutions: Karatina University, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan Institute of Technology

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: gold

Estimated APC paid: $1,750

Funder: National Natural Science Foundation of China