Efficient electron injection into plasma waves using higher-order laser modes
- Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
Using higher-order transverse laser modes as drivers for plasma wave excitation, and, in particular, using ring laser beams with maximum intensities off-axis, results in reversal of the focusing and defocusing phase regions in a laser wakefield accelerator. This results in improved performance of self-trapping and laser injection schemes. Specifically, the trapping threshold required for optical injection is decreased and the maximum energy gain of the trapped electrons is increased. This method could also be of interest for the generation of ring electron beams or for beam conditioning.
- OSTI ID:
- 20860397
- Journal Information:
- Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 11 Vol. 13; ISSN PHPAEN; ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
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