期刊
NEW JOURNAL OF PHYSICS
卷 24, 期 11, 页码 -出版社
IOP Publishing Ltd
DOI: 10.1088/1367-2630/ac9b80
关键词
high harmonic generation; plasma physics; attosecond physics
资金
- EPSRC [EP/T022175]
Bright attosecond pulses of extreme ultraviolet and x-ray radiation can be generated when intense light is incident on a solid target. A non-collinear gating scheme allows for the extraction of a single intense attosecond pulse from the train of pulses.
When light with relativistic intensity is incident on a solid target, bright attosecond pulses of extreme ultraviolet and x-ray radiation can be generated in the reflected beam. Unfortunately, the use of multi-cycle laser pulses results in trains of these attosecond pulses. Here we investigate a non-collinear gating scheme applied to surface high-harmonic generation to allow for the extraction of a single intense attosecond pulse from this train. Using 3D and 2D particle in cell (PIC) simulations we demonstrate that it is possible to angularly isolate a single attosecond pulse from the main driving laser pulse using this interaction geometry with intensities I > 10(20) W cm(-2). This result opens the door to generating bright attosecond pulses from relativistic plasmas without the need to spectrally filter the driving laser pulse.
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