Observation of Laser Power Amplification in a Self-Injecting Laser Wakefield Accelerator.

  title={Observation of Laser Power Amplification in a Self-Injecting Laser Wakefield Accelerator.},
  author={M J V Streeter and Stefan Kneip and Michael S. Bloom and Rodolfo Bendoyro and Oleg V. Chekhlov and A. E. Dangor and Andreas D{\"o}pp and Chris J. Hooker and J. Holloway and J. Jiang and Nelson C. Lopes and H. Nakamura and Peter A. Norreys and Charlotte A J Palmer and P. P. Rajeev and J Schreiber and Dan R. Symes and M. Wing and Stuart P. D. Mangles and Z. Najmudin},
  journal={Physical review letters},
  volume={120 25},
We report on the depletion and power amplification of the driving laser pulse in a strongly driven laser wakefield accelerator. Simultaneous measurement of the transmitted pulse energy and temporal shape indicate an increase in peak power from 187±11  TW to a maximum of 318±12  TW after 13 mm of propagation in a plasma density of 0.9×10^{18}  cm^{-3}. The power amplification is correlated with the injection and acceleration of electrons in the nonlinear wakefield. This process is modeled by… 

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