Observation of relativistic cross-phase modulation in high-intensity laser-plasma interactions

S. Chen, M. Rever, P. Zhang, W. Theobald, D. Umstadter

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

A nonlinear optical phenomenon, relativistic cross-phase modulation, is reported. A relativistically intense light beam (I=1.3A 1018 W cma 2, λ=1.05 Î m) is experimentally observed to cause phase modulation of a lower intensity, copropagating light beam in a plasma. The latter beam is generated when the former undergoes the stimulated Raman forward scattering instability. The bandwidth of the Raman satellite is found to be broadened from 3.8â€"100 nm when the pump laser power is increased from 0.45â€"2.4 TW. A signature of relativistic cross-phase modulation, namely, asymmetric spectral broadening of the Raman signal, is observed at a pump power of 2.4 TW. The experimental cross-phase modulated spectra compared well with theoretical calculations. Applications to generation of high-power single-cycle pulses are also discussed.

Original languageEnglish (US)
Article number046406
JournalPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
Volume74
Issue number4
DOIs
StatePublished - Jan 1 2006

Fingerprint

Laser-plasma Interaction
laser plasma interactions
Phase Modulation
Raman
phase modulation
high power lasers
light beams
Pump
pumps
Light Intensity
forward scattering
High Power
Signature
Plasma
Bandwidth
signatures
Scattering
Raman spectra
Laser
bandwidth

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Statistics and Probability
  • Condensed Matter Physics

Cite this

Observation of relativistic cross-phase modulation in high-intensity laser-plasma interactions. / Chen, S.; Rever, M.; Zhang, P.; Theobald, W.; Umstadter, D.

In: Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, Vol. 74, No. 4, 046406, 01.01.2006.

Research output: Contribution to journalArticle

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