Longitudinal Laser Shaping in Laser Wakefield Accelerators

Technical Report · Thu Aug 09 00:00:00 EDT 2001

DOI:https://doi.org/10.2172/787215· OSTI ID:787215

Chen, Pisin ^[1]

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1. SLAC

We study the energetics of wake excitation during the laser-plasma interaction in application to laser wakefield accelerators. We find that both the wake amplitude and the accelerating efficiency (transformer ratio) can be maximized by properly shaping the longitudinal profile of the driving laser pulse. The corresponding family of laser pulse shapes is derived in the nonlinear regime of laser-plasma interaction. Such shapes provide theoretical upper limit on the magnitude of the wakefield and efficiency by allowing for uniform photon deceleration inside the laser pulse. We also construct realistic optimal pulse shapes that can be produced in finite-bandwidth laser systems.

• Research Organization: Stanford Linear Accelerator Center, Menlo Park, CA (US)
• Sponsoring Organization: USDOE Office of Energy Research (ER) (US)
• DOE Contract Number: AC03-76SF00515
• OSTI ID: 787215
• Report Number(s): SLAC-PUB-8948
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ACCELERATION
AMPLITUDES
BEAM SHAPING
EFFICIENCY
EXCITATION
LASERS
PHOTONS
PULSE SHAPERS
WAKEFIELD ACCELERATORS