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A laser-plasma accelerator driven by two-color relativistic femtosecond laser pulses.
Li, Song; Li, Guangyu; Ain, Quratul; Hur, Min Sup; Ting, Antonio C; Kulagin, Victor V; Kamperidis, Christos; Hafz, Nasr A M.
Afiliación
  • Li S; Key Laboratory for Laser Plasmas (Ministry of Education), Collaborative Innovation Center of IFSA (CICIFSA), School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China.
  • Li G; ELI-ALPS, ELI-HU Nonprofit Ltd., Dugonics tér 13, Szeged 6720, Hungary.
  • Ain Q; Key Laboratory for Laser Plasmas (Ministry of Education), Collaborative Innovation Center of IFSA (CICIFSA), School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China.
  • Hur MS; Key Laboratory for Laser Plasmas (Ministry of Education), Collaborative Innovation Center of IFSA (CICIFSA), School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China.
  • Ting AC; Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea.
  • Kulagin VV; Institute for Research in Electronics and Applied Physics, University of Maryland, College Park, MD 20742, USA.
  • Kamperidis C; Sternberg Astronomical Institute of Moscow State University, Moscow 119992, Russia.
  • Hafz NAM; Kotelnikov Institute of Radioengineering and Electronics of Russian Academy of Sciences, Moscow, 125009, Russia.
Sci Adv ; 5(11): eaav7940, 2019 11.
Article en En | MEDLINE | ID: mdl-31803828
A typical laser-plasma accelerator (LPA) is driven by a single, ultrarelativistic laser pulse from terawatt- or petawatt-class lasers. Recently, there has been some theoretical work on the use of copropagating two-color laser pulses (CTLP) for LPA research. Here, we demonstrate the first LPA driven by CTLP where we observed substantial electron energy enhancements. Those results have been further confirmed in a practical application, where the electrons are used in a bremsstrahlung-based positron generation configuration, which led to a considerable boost in the positron energy as well. Numerical simulations suggest that the trailing second harmonic relativistic laser pulse is capable of sustaining the acceleration structure for much longer distances after the preceding fundamental pulse is depleted in the plasma. Therefore, our work confirms the merits of driving LPAs by two-color pulses and paves the way toward a downsizing of LPAs, making their potential applications in science and technology extremely attractive and affordable.

Texto completo: 1 Bases de datos: MEDLINE Idioma: En Revista: Sci Adv Año: 2019 Tipo del documento: Article País de afiliación: China

Texto completo: 1 Bases de datos: MEDLINE Idioma: En Revista: Sci Adv Año: 2019 Tipo del documento: Article País de afiliación: China