It is shown that second-harmonic generation in a grating allows one to cancel the group-velocity difference between two polarization components at fundamental by means of nonlinearly induced phase shifts. This occurs when a new type of cascading soliton propagates on resonance.
© 1996 Optical Society of America
Stefano Trillo, "Resonance Thirring solitons in type II second-harmonic generation," Opt. Lett. 21, 1732-1734 (1996)