High quality electron beam acceleration by ionization injection in laser wakefields with mid-infrared dual-color lasers

Abstract

For the laser wakefield acceleration, suppression of beam energy spread while keeping sufficient charge is one of the key challenges. In order to achieve this, we propose bichromatic laser ionization injection with combined laser wavelengths of $2.4\mu \mathrm{m}$ and $0.8\mu \mathrm{m}$ for wakefield excitation and for triggering electron injection via field ionization, respectively. A laser pulse at $2.4\mu \mathrm{m}$ wavelength enables one to drive an intense acceleration structure with relatively low laser power. To further reduce the requirement of laser power, we also propose to use carbon dioxide as the working gas medium, where carbon acts as the injection element. Our full three dimensional particle-in-cell simulations show that electron beams at the GeV energy level with both low energy spreads (around one percent) and high charges (several tens of picocoulomb) can be obtained by this scheme with laser parameters achievable in the near future.

5 pages, 4 figures

References in corpus (8)

• Femtosecond x rays from laser-plasma accelerators
• Enhancement of electron energy to multi-GeV regime by a dual-stage laser-wakefield accelerator pumped by petawatt laser pulses
• Beam loading in the nonlinear regime of plasma-based acceleration
• Multi-chromatic narrow-energy-spread electron bunches from laser wakefield acceleration with dual-color lasers
• Magnetic control of particle-injection in plasma based accelerators
• Self-truncated ionization injection and consequent monoenergetic electron bunches in laser wakefield acceleration
• Phase Space Dynamics of Ionization Injection in Plasma Based Accelerators
• Low emittance electron beam generation from a laser wakefield accelerator using two laser pulses with different wavelengths

Cited by in corpus (7)

• The REsonant Multi-Pulse Ionization injection
• Scissor-cross ionization injection in laser wakefield accelerators
• Radiation Reaction of Betatron Oscillation in Plasma Wakefield Accelerators
• Ponderomotive Injection in Plasma Wakefield Accelerators
• Plasma Lenses for Relativistic Laser Beams in Laser Wakefield Accelerators
• Characterization of ionization injection in gas mixtures irradiated by sub-petawatt class laser pulses
• High Flux Electron Beams from Laser Wakefield Accelerators Driven by Petawatt Lasers