Spatial solitons in type II quasiphase-matched slab waveguides.
Phys Rev E Stat Nonlin Soft Matter Phys
; 68(6 Pt 2): 065603, 2003 Dec.
Article
em En
| MEDLINE
| ID: mdl-14754260
The existence and dynamics of one-dimensional spatial solitons formed upon propagation in quasiphase-matched gratings, through three-wave parametric interaction, is analyzed. We study the general case in which the grating exhibits a periodic modulation of both the refractive index and the second-order susceptibility. It is demonstrated that for negative effective wave vector mismatch the induced third-order nonlinearities increase the domain of soliton instability. Finally, the dependence of the efficiency of the second harmonic generation process in the soliton regime, on the parameters of the grating, is discussed.
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Base de dados:
MEDLINE
Idioma:
En
Ano de publicação:
2003
Tipo de documento:
Article