TY - JOUR
T1 - Observation of relativistic cross-phase modulation in high-intensity laser-plasma interactions
AU - Chen, S.
AU - Rever, M.
AU - Zhang, P.
AU - Theobald, W.
AU - Umstadter, D.
PY - 2006
Y1 - 2006
N2 - 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.
AB - 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.
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U2 - 10.1103/PhysRevE.74.046406
DO - 10.1103/PhysRevE.74.046406
M3 - Article
C2 - 17155181
AN - SCOPUS:33750184606
SN - 1539-3755
VL - 74
JO - Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
JF - Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
IS - 4
M1 - 046406
ER -