Carrier-envelope phase controlled dynamics of relativistic electron beams in a laser-wakefield accelerator
| Autor: | Lucas Rovige, Joséphine Monzac, Julius Huijts, Igor A. Andriyash, Aline Vernier, Jaismeen Kaur, Marie Ouillé, Zhao Cheng, Vidmantas Tomkus, Valdas Girdauskas, Gediminas Raciukaitis, Juozas Dudutis, Valdemar Stankevic, Paulius Gecys, Rodrigo Lopez-Martens, Jérôme Faure |
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| Přispěvatelé: | Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Center for Physical Sciences and Technology [Vilnius] (FTMC), Vytautas Magnus University - Vytauto Didziojo Universitetas (VDU), ANR-20-CE92-0043,HighRep,Accélération laser plasma avec des laser kiloHertz(2020), European Project: 101004730,IFAST |
| Rok vydání: | 2022 |
| Předmět: |
Plasma Physics (physics.plasm-ph)
[PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph] Physics::Plasma Physics Physics::Accelerator Physics FOS: Physical sciences General Physics and Astronomy General Materials Science Physical and Theoretical Chemistry Physics - Plasma Physics Physics - Optics Optics (physics.optics) |
| Zdroj: | The European Physical Journal. Special Topics The European Physical Journal. Special Topics, 2022, ⟨10.1140/epjs/s11734-022-00675-7⟩ |
| ISSN: | 1951-6401 1951-6355 |
| Popis: | International audience; In laser-wakefield acceleration, an ultra-intense laser pulse is focused into an underdense plasma to accelerate electrons to relativistic velocities. In most cases, the pulses consist of multiple optical cycles and the interaction is well described in the framework of the ponderomotive force where only the envelope of the laser has to be considered. But when using single-cycle pulses, the ponderomotive approximation breaks down, and the actual waveform of the laser has to be taken into account. In this paper, we use nearsingle-cycle laser pulses to drive a laser-wakefield accelerator. We observe variations of the electron beam pointing on the order of 10 mrad in the polarization direction, as well as 30% variations of the beam charge, locked to the value of the controlled laser carrier-envelope phase, in both nitrogen and helium plasma. Those findings are explained through particle-in-cell simulations indicating that low-emittance, ultrashort electron bunches are periodically injected off-axis by the transversally oscillating bubble associated with the slipping carrier-envelope phase. |
| Databáze: | OpenAIRE |
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