We show analytically the existence of nondegenerate symbiotic solitary waves in quadratic media with absorption losses. We study these new solitary waves in the particular case of a backward quasi-phase-matching configuration. Our numerical simulations reveal that, when it is used inside a singly resonant optical parametric oscillator, this configuration leads to the spontaneous formation of new solitary waves.
© 1998 Optical Society of America
Antonio Picozzi and Marc Haelterman, "Spontaneous formation of symbiotic solitary waves in a backward quasi-phase-matched parametric oscillator," Opt. Lett. 23, 1808-1810 (1998)