Nonlinear directional coupler in periodically poled lithium niobate
- 15 November 1999
- journal article
- Published by Optica Publishing Group in Optics Letters
- Vol. 24 (22) , 1617-1619
- https://doi.org/10.1364/ol.24.001617
Abstract
Nonlinear wave propagation was investigated experimentally in coupled waveguides by means of the cascaded nonlinearity in quasi-phase-matched second-harmonic generation. With a specially designed wave-vector-mismatch distribution along the propagation axis, cascading was optimized for low fundamental depletion. High-contrast, ultrafast all-optical switching with switching powers of tens of watts was observed.Keywords
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