Attosecond electron bunches accelerated and compressed by radially polarized laser pulses and soft-x-ray pulses from optical undulators

作者：Sell A^*; Kaertner F X

来源：Journal of Physics B: Atomic, Molecular and Optical Physics , 2014, 47(1): 015601.

DOI：10.1088/0953-4075/47/1/015601

We present a study of direct laser driven electron acceleration and scaling of attosecond bunch compression in unbound vacuum. Simple analytical expressions and detailed three-dimensional numerical calculations including space charge and non-paraxial laser fields reveal the conditions for compression to attosecond electron sheets. Intermediate emittance minima suitable for brilliant x-ray generation in optical undulators are predicted. We verify a favourable coherent enhancement of the resulting x-ray fields and demonstrate feasibility for realistic laser parameters.

• 出版日期2014-1-14