D.E. Pelinovsky, J.E. Sipe, and J. Yang
Generation of soliton oscillations in nonlinear quadratic materials
Phys. Rev. E 59, 7250-7253 (1999)
We show analytically and numerically that the generation
of long-lasting soliton oscillations in resonant chi((2))
optical materials possesses a threshold for the amplitude
of a. fundamental wave. The persistent oscillations of
solitary waves reported by Etrich et al.
[Phys. Rev. E 54, 4321 (1996)] are found to appear for
finite values of the wave amplitude.
2ND-HARMONIC GENERATION, INTERNAL MODES, WAVES, INSTABILITY