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arXiv · 1605.07463

Generation of Gamma-ray Beam with Orbital Angular Momentum in the QED Regime

Chen Liu·Baifei Shen·Xiaomei Zhang·Yin Shi·Liangliang Ji·Wenpeng Wang·Longqing Yi·Lingang Zhang·Tongjun Xu·Zhikun Pei·Zhizhan Xu
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Abstract

We propose a scheme to generate gamma-ray photons with an orbital angular momentum (OAM) and high energy simultaneously from laser-plasma interactions by irradiating a circularly polarized Laguerre-Gaussian laser on a thin plasma target. The spin angular momentum and OAM are first transferred to electrons from the driving laser photons, and then the OAM is transferred to the gamma-ray photons from the electrons through quantum radiation. This scheme has been demonstrated using three-dimensional quantum electrodynamics particle-in-cell simulation. The topological charge, chirality and carrier-envelope phase of the short ultra-intense vortex laser can be revealed according to the pattern feature of the energy density of radiated photons.

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Chen Liu, Baifei Shen, Xiaomei Zhang, Yin Shi, Liangliang Ji, Wenpeng Wang, Longqing Yi, Lingang Zhang, Tongjun Xu, Zhikun Pei, Zhizhan Xu. 2016-05-24. Generation of Gamma-ray Beam with Orbital Angular Momentum in the QED Regime. https://doi.org/10.1063/1.4963396

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