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Multistep cascading in periodically poled directional couplers

Koynov, Kaloyan; Saltiel, Solomon M.; Kivshar, Yuri S.


We suggest a novel scheme for multistep cascaded parametric processes based on a periodically poled nonlinear directional coupler and derive the conditions for simultaneous phase matching of the second-harmonic generation and sum-frequency mixing processes. We predict an efficient wavelength conversion by the cascaded third-harmonic generation from the third optical communication window (1.53–1.56 𝜇m) to visible in a LiNbO₃ poled waveguide coupler.

CollectionsANU Research Publications
Date published: 2005
Type: Journal article
Source: Optics Letters
DOI: 10.1364/OL.30.002284


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