Particle-in-cell simulations of Raman laser amplification in preformed plasmas

Daniel S. Clark, Nathaniel J. Fisch

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The recently proposed backward Raman laser amplification scheme utilizes the stimulated Raman backscattering in plasma of a long pumping laser pulse to amplify a short, frequency downshifted seed pulse. The output intensity for this scheme is limited by the development of forward Raman scattering (FRS) or modulational instabilities of the highly amplified seed. Theoretically, focused output intensities as high as 10 25 W/cm 2 and pulse lengths of less than 100 fs could be accessible by this technique for 1 μm lasers - an improvement of 10 4-10 5 in focused intensity over current techniques. Simulations with the particle-in-cell code Zohar are presented which investigate the effects of FRS and modulational instabilities and of Langmuir wave breaking on the output intensity for Raman amplification.

Original languageEnglish (US)
Title of host publicationInertial Fusion Sciences and Applications 2003
EditorsB.A. Hammel, D.D. Meyerhofer, J. Meyer-ter-Vehn
Pages658-661
Number of pages4
StatePublished - Dec 1 2004
EventThird International Conference on Inertial Fusion Sciences and Applications, IFSA 2003 - Monterey, CA, United States
Duration: Sep 7 2003Sep 12 2003

Publication series

NameInertial Fusion Sciences and Applications 2003

Other

OtherThird International Conference on Inertial Fusion Sciences and Applications, IFSA 2003
CountryUnited States
CityMonterey, CA
Period9/7/039/12/03

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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  • Cite this

    Clark, D. S., & Fisch, N. J. (2004). Particle-in-cell simulations of Raman laser amplification in preformed plasmas. In B. A. Hammel, D. D. Meyerhofer, & J. Meyer-ter-Vehn (Eds.), Inertial Fusion Sciences and Applications 2003 (pp. 658-661). (Inertial Fusion Sciences and Applications 2003).