We demonstrate experimentally and theoretically the creation of a third soliton in two soliton collision processes in type I noncritically phase-matched KNbO<sub>3</sub> . The output pattern in the collision process is phase dependent, but the total energy and the relative ratio of the fundamental to the second harmonic in each soliton remain essentially unchanged to within experimental accuracy.
© 2003 Optical Society of America
Ladislav Jankovic, Hongki Kim, Sergey Polyakov, George I. Stegeman, Christian Bosshard, and Peter Gunter, "Birth of solitons in quadratic spatial soliton collisions," Opt. Lett. 28, 1037-1039 (2003)