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

Streeter, M. J.; Kneip, S.; Bloom, M. S.; Bendoyro, R. A.; Chekhlov, O.; Dangor, A. E.; Doepp, A.; Hooker, C. J.; Holloway, J.; Jiang, J.; Lopes, N. C.; Nakamura, H.; Norreys, P. A.; Palmer, C. A. J.; Rajeev, P. P.; Schreiber, J.; Symes, D. R.; Wing, M.; Mangles, S. P. D. und Najmudin, Z. (2018): Observation of Laser Power Amplification in a Self-Injecting Laser Wakefield Accelerator. In: Physical Review Letters, Bd. 120, Nr. 25, 254801

Abstract

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 x 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 including a localized redshift and subsequent group delay dispersion at the laser pulse front.

• Dokumententyp: Zeitschriftenartikel
• Fakultät: Physik
• Themengebiete: 500 Naturwissenschaften und Mathematik > 530 Physik
• ISSN: 0031-9007
• Sprache: Englisch