The reflection of bulk quadratic solutions incident onto a quadratically nonlinear interface in periodically poled potassium titanyl phosphate was observed. The interface consisted of the boundary between two quasi-phase-matched regions displaced from each other by a half-period. At high intensities and small angles of incidence the soliton is reflected.
© 2003 Optical Society of America
Ladislav Jankovic, Hongki Kim, George Stegeman, Silvia Carrasco, Lluis Torner, and Mordechai Katz, "Quadratic soliton self-reflection at a quadratically nonlinear interface," Opt. Lett. 28, 2103-2105 (2003)