Controlling the group velocity of an intense laser pulse using a pre-pulse

Samuel R. Yoffe; Bernhard Ersfeld; Devki N. Gupta; Arohi Jain; Matthew P. Tooley; George K. Holt; Dino A. Jaroszynski

doi:10.1117/12.2595294

18 April 2021 Controlling the group velocity of an intense laser pulse using a pre-pulse

Samuel R. Yoffe, Bernhard Ersfeld, Devki N. Gupta, Arohi Jain, Matthew P. Tooley, George K. Holt, Dino A. Jaroszynski

Proceedings Volume 11778, Relativistic Plasma Waves and Particle Beams as Coherent and Incoherent Radiation Sources IV; 1177809 (2021) https://doi.org/10.1117/12.2595294
Event: SPIE Optics + Optoelectronics, 2021, Online Only

Abstract

The accelerating structure of the laser wakefield accelerator (LWFA) is dynamic and highly sensitive to the local laser and plasma properties. It can expand and contract as it responds to the evolution of the laser and plasma fields. As a result, the position of, and environment within, the LWFA bubble are usually time dependent, which is not ideal for stable acceleration. Variations can have a negative impact on electron bunch properties, and are deleterious for ion channel lasers and plasma wigglers. We demonstrate how a laser pre-pulse improves the stability of the LWFA, and controls the evolution of the laser group and bubble velocity, which are important for determining LWFA dephasing and ultimately the electron bunch energy.

Conference Presentation

Citation Download Citation

Samuel R. Yoffe, Bernhard Ersfeld, Devki N. Gupta, Arohi Jain, Matthew P. Tooley, George K. Holt, and Dino A. Jaroszynski "Controlling the group velocity of an intense laser pulse using a pre-pulse", Proc. SPIE 11778, Relativistic Plasma Waves and Particle Beams as Coherent and Incoherent Radiation Sources IV, 1177809 (18 April 2021); https://doi.org/10.1117/12.2595294

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