title: Cerenkov second-harmonic generation in the strong conversion limit: new effects.
abstract: Using beam propagation method calculations, we show that new effects occur for second-harmonic generation in the Cerenkov regime when it is optimized for efficient coupling to leaky modes. The fundamental throughput becomes independent of the input power over a few decades; i.e., optical power limiting is found. At even higher input powers, the fundamental throughput abruptly switches back to approximately the input power as a consequence of generating coupled second-harmonic-fundamental solitary waves in the waveguide because of the cascading effect.
authors.forename: G J
authors.initials: GJ
authors.lastname: Krijnen
authors.forename: H J
authors.initials: HJ
authors.lastname: Hoekstra
authors.forename: G I
authors.initials: GI
authors.lastname: Stegeman
authors.forename: W
authors.initials: W
authors.lastname: Torruellas