Isolated attosecond light pulse generation from plasma surfaces at varying laser intensities and incidence angles

Guangjin Ma; Jingbiao Chen; Jin He; Laszlo Veisz

doi:10.1117/12.2619781

1 July 2022 Isolated attosecond light pulse generation from plasma surfaces at varying laser intensities and incidence angles

Guangjin Ma, Jingbiao Chen, Jin He, Laszlo Veisz

Author Affiliations +

Proceedings Volume 12291, 1st International Conference on UltrafastX 2021; 1229104 (2022) https://doi.org/10.1117/12.2619781
Event: 1st International Conference on UltrafastX 2021, 2022, Xi'an, China

Abstract

Harmonics from relativistic laser driven plasma surfaces is a prospective high energy attosecond light source in future XUV pump-probe experiments. Among all the schemes, the most efficient and direct way to realize an isolated attosecond pulse is through using a few-cycle laser as the driving pulse. The two goodness criteria: the laser to harmonics energy conversion efficiency and the “purity” of an isolated attosecond pulse are generally determined by a combination of interaction parameters. Through using particle-in-cell simulations and relativistic electron dynamics model analyses, we explain how these two criteria are affected by the laser intensity, incidence angle, carrier-envelope phase, and the plasma scale length. We found that, there exist an optimal plasma scale length and an optimal incidence angle to efficiently generate harmonics and intense attosecond light pulses. When other parameters are fixed, using a moderately intense relativistic laser or using a large incidence angle could result in a higher isolation degree as well as a broader range of controlling parameters to realize an isolated attosecond light pulse.

Citation Download Citation

Guangjin Ma, Jingbiao Chen, Jin He, and Laszlo Veisz "Isolated attosecond light pulse generation from plasma surfaces at varying laser intensities and incidence angles", Proc. SPIE 12291, 1st International Conference on UltrafastX 2021, 1229104 (1 July 2022); https://doi.org/10.1117/12.2619781

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