Longitudinal laser shaping in laser wakefield accelerators

Anatoly Spitkovsky, Pisin Chen

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

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.

Original languageEnglish (US)
Pages (from-to)125-130
Number of pages6
JournalPhysics Letters, Section A: General, Atomic and Solid State Physics
Volume296
Issue number2-3
DOIs
StatePublished - Apr 15 2002

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Keywords

  • Efficiency
  • Laser shaping
  • Wakefield optimization

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