Inverse design of coherent supercontinuum generation using free-form nanophotonic waveguides
Abstract
Many key functionalities of optical frequency combs such as self-referencing and broad spectral access rely on coherent supercontinuum generation (SCG). While nanophotonic waveguides have emerged as a compact and power-efficient platform for SCG, their geometric degrees of freedom have not been fully utilized due to the underlying nonlinear and stochastic physics. Here, we introduce inverse design to unlock free-form waveguides for coherent SCG. The efficacy of our design is numerically and experimentally demonstrated on Si3N4 waveguides, producing flat and coherent spectra from visible to mid-infrared wavelengths. Our work has direct applications in developing chip-based broadband light sources for spectroscopy, metrology, and sensing across multiple spectral regimes.
Keywords
Cite
@article{arxiv.2312.10640,
title = {Inverse design of coherent supercontinuum generation using free-form nanophotonic waveguides},
author = {Chia-Yi Lee and Yanwu Liu and Yinke Cheng and Cheng-Hao Lao and Qihuang Gong and Qi-Fan Yang},
journal= {arXiv preprint arXiv:2312.10640},
year = {2023}
}