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arXiv · 2512.07334

Three-Octave Supercontinuum Generation in Thick Crystalline Aluminum Nitride Waveguides

Samantha Sbarra·Samuele Brunetta·Pierre Arnaud Demongodin·Jean-François Carlin·Nicolas Grandjean·Raphaël Butté·Camille-Sophie Brès
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Abstract

We report an efficient extension of supercontinuum generation through dispersion engineering of crystalline aluminum nitride (AlN)-on-sapphire waveguides. Using a tailored epitaxial regrowth of AlN epilayers and an optimized fabrication protocol, the dispersion sensitivity to the waveguide cross-section was enhanced allowing for a significant reach extension of both short and long dispersive wave with optimized pumping conditions, reaching down to 550 nm in the visible and up to 4.5 {\mu}m in the mid-infrared.

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Samantha Sbarra, Samuele Brunetta, Pierre Arnaud Demongodin, Jean-François Carlin, Nicolas Grandjean, Raphaël Butté, Camille-Sophie Brès. 2025-12-08. Three-Octave Supercontinuum Generation in Thick Crystalline Aluminum Nitride Waveguides. https://doi.org/10.1364/ol.577343

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