The effect of a negatively chirped laser pulse on the evolution of bubble structure in nonlinear bubble regime

H. Vosoughian, Z. Riazi, H. Afarideh, G. Sarri

Research output: Contribution to journalArticle

3 Citations (Scopus)
268 Downloads (Pure)

Abstract

In the nonlinear bubble regime, due to localized depletion at the front of the pulse during its propagation through the plasma, the phase shift between carrier waves and pulse envelope plays an important role in plasma response. The Carrier-Envelope Phase (CEP) breaks down the symmetric transverse ponderomotive force of the laser pulse that makes the bubble structure unstable. Our studies using a series of two-dimensional particle-in-cell simulations show that the utilization of a negatively chirped laser pulse is more effective in controlling the pulse depletion rate, and consequently, the effect of the CEP in the bubble regime. The results indicate that the pulse depletion rate diminishes during the propagation of the pulse in plasma that leads to postponing the effect of Carrier-Envelope Phase (CEP) in plasma response, and therefore, maintaining the stability of the bubble shape for a longer time than the un-chirped laser pulse. As a result, a localized electron bunch with higher maximum energy is produced during the acceleration process.

Original languageEnglish
Article number123113
JournalPhysics of Plasmas
Volume23
Issue number12
DOIs
Publication statusPublished - 01 Dec 2016

ASJC Scopus subject areas

  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'The effect of a negatively chirped laser pulse on the evolution of bubble structure in nonlinear bubble regime'. Together they form a unique fingerprint.

  • Cite this