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arXiv · 1209.5293

Guided-wave frequency doubling in surface periodically poled lithium niobate: competing effects

Salvatore Stivala·Alessia Pasquazi·Lorenzo Colace·Gaetano Assanto·Alessandro C. Busacca·Matteo Cherchi·Stefano Riva-Sanseverino·Alfonso C. Cino·Antonino Parisi
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Abstract

We carried out second-harmonic generation in quasi-phase-matched \alpha-phase lithium niobate channel waveguides realized by proton exchange and surface periodic poling. Owing to a limited ferroelectric domain depth, we could observe the interplay between second-harmonic generation and self-phase modulation due to cascading and cubic effects, resulting in a nonlinear resonance shift. Data reduction allowed us to evaluate both the quadratic nonlinearity in the near infrared as well as the depth of the uninverted domains.

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Salvatore Stivala, Alessia Pasquazi, Lorenzo Colace, Gaetano Assanto, Alessandro C. Busacca, Matteo Cherchi, Stefano Riva-Sanseverino, Alfonso C. Cino, Antonino Parisi. 2012-09-24. Guided-wave frequency doubling in surface periodically poled lithium niobate: competing effects. https://doi.org/10.1364/josab.24.001564

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