Three-Octave Supercontinuum Generation in Thick Crystalline Aluminum Nitride Waveguides
Optics
2025-12-09 v1
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.
Keywords
Cite
@article{arxiv.2512.07334,
title = {Three-Octave Supercontinuum Generation in Thick Crystalline Aluminum Nitride Waveguides},
author = {Samantha Sbarra and Samuele Brunetta and Pierre Arnaud Demongodin and Jean-François Carlin and Nicolas Grandjean and Raphaël Butté and Camille-Sophie Brès},
journal= {arXiv preprint arXiv:2512.07334},
year = {2025}
}
Comments
4 pages, 4 figures