We propose a new method of phase matching in nonlinear waveguides, using the higher-order waveguide mode as an intermediary for efficient second-harmonic or difference-frequency generation, and show that high conversion efficiencies can be achieved with this scheme.
© 2000 Optical Society of America
(030.1640) Coherence and statistical optics : Coherence
(190.2620) Nonlinear optics : Harmonic generation and mixing
(190.4390) Nonlinear optics : Nonlinear optics, integrated optics
(230.7370) Optical devices : Waveguides
Di Yang, Jacob B. Khurgin, and Yujie J. Ding, "Cascaded waveguide phase-matching arrangement," Opt. Lett. 25, 496-498 (2000)