Interaction of relativistic electrons with an intense laser pulse: High-order harmonic generation based on Thomson scattering

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• 作者：Szabolcs Hack^a ; ^b ; ; Sá ; ndor Varró ; ^a ; ^c ; Attila Czirjá ; k^a ; ^b
• 关键词：Thomson scattering ; HHG ; Attosecond pulse ; Relativistic electron bunch
• 刊名：Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
• 出版年：2016
• 出版时间：15 February 2016
• 年：2016
• 卷：369
• 期：Complete
• 页码：45-49
• 全文大小：949 K

文摘

We investigate nonlinear Thomson scattering as a source of high-order harmonic radiation with the potential to enable attosecond light pulse generation. We present a new analytic solution of the electron’s relativistic equations of motion in the case of a short laser pulse with a sine-squared envelope. Based on the single electron emission, we compute and analyze the radiated amplitude and phase spectrum for a realistic electron bunch, with special attention to the correct initial values. These results show that the radiation spectrum of an electron bunch in head-on collision with a sufficiently strong laser pulse of sine-squared envelope has a smooth frequency dependence to allow for the synthesis of attosecond light pulses.