Initial phase-sensitivity of spatial characteristics in the tightly and non-tightly focused linearly polarized few-cycle region

Yiqiu Wang; Conglin Wang; Kang Li; Lingxiao Li; Youwei Tian

doi:10.1117/12.2584745

2 December 2020 Initial phase-sensitivity of spatial characteristics in the tightly and non-tightly focused linearly polarized few-cycle region

Yiqiu Wang, Conglin Wang, Kang Li, Lingxiao Li, Youwei Tian

Author Affiliations +

Proceedings Volume 11717, 24th National Laser Conference & Fifteenth National Conference on Laser Technology and Optoelectronics; 117170I (2020) https://doi.org/10.1117/12.2584745
Event: 24th National Laser Conference & Fifteenth National Conference on Laser Technology and Optoelectronics, 2020, Shanghai, China

Abstract

Within the frame of electrodynamic and nonlinearly Thomson scattering, we study the initial phase-sensitivity with respect to spatial characteristics of a static electron irradiated by Guassian linearly polarized few-cycle laser pulse for different beam waists. With the combination and comparison of the electron's real-time motion and radiation conditions, the initial phase-sensitivity turns out with inverse proportional relation to the beam waist where the radiation’s transverse shift of varied initial phases is irregular in the non-tightly focused case. Furthermore, by changing the initial phases, the petal-like full spatial radiation pattern changes from 4 unstable pieces to 2 constant pieces and the radiated energy shift slows down with the beam waist evolving from b₀ = 1 to b₀ = 10. Finally, with initial phase 𝜙0 increasing from 0 to π we discover an interesting phenomenon for the first time, where the normalized maximal radiated power and corresponding azimuth angle fluctuate in the form of ripples and ladders in tightly-focused case b₀ = 1, in contrast to the perfectly symmetry with respect to φ₀ = 0.5π for the maximal radiated power in non-tightly focused case b₀ = 10.

Citation Download Citation

Yiqiu Wang, Conglin Wang, Kang Li, Lingxiao Li, and Youwei Tian "Initial phase-sensitivity of spatial characteristics in the tightly and non-tightly focused linearly polarized few-cycle region", Proc. SPIE 11717, 24th National Laser Conference & Fifteenth National Conference on Laser Technology and Optoelectronics, 117170I (2 December 2020); https://doi.org/10.1117/12.2584745

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