R. Landauer
Journal of Statistical Physics
The velocities of the envelope and phase are derived for a laser pulse propagating in a nonlinear dielectric with intensity dependent index of refraction and an estimate made of the frequency shift due to the nonlinearity. © 1967.
R. Landauer
Journal of Statistical Physics
R.J. Joenk
Physical Review
M. B̈ttiker, E.P. Harris, et al.
Physical Review B
R. Landauer
Zeitschrift für Physik B Condensed Matter