Scattering of a few-cycle laser pulse by a single relativistic electron |
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Authors: | Youwei Tian Qiuyuan Zhang Xunjian Yu Yang Chen Yiwen Jiang Huanhuan Liu |
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Institution: | 1. College of Science, Nanjing University of Posts and Telecommunications, Nanjing, 210023, People’s Republic of China 2. College of Optoelectronic Engineering, Nanjing University of Posts and Telecommunications, Nanjing, 210023, People’s Republic of China
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Abstract: | The scattering of a single relativistic electron with few-cycle plane wave laser pulse with intensity of about $I=1.38\times 10^{14}\,\text{ W/cm }^{2}$ is theoretically and numerically analyzed in the linear regime, and the radiated energy spectra of electron shows that zeptosecond X-ray pulses can be supported. The influences of the initial carrier-envelope phase offset $\varphi _0$ of the incident few-cycle laser pulses are studied, and the results demonstrate that a single zeptosecond pulse can be produced from scattering by using a single-cycle laser pulse with fixed initial carrier-envelope phase offset $\varphi _0 =\pi /2$ . It is discovered that the influence of the initial carrier-envelope phase $\varphi _0$ on the spectrum of the radiation is apparent for low and high frequency of the spectrum, but there is no influence of the central part of the spectrum. |
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