Towards visible soliton microcomb generation
Abstract
Frequency combs have applications that extend from the ultra-violet into the mid-infrared bands. Microcombs, a miniature and often semiconductor-chip-based device, can potentially access most of these applications, but are currently more limited in spectral reach. Here, we demonstrate mode-locked silica microcombs with emission near the edge of the visible spectrum. By using both geometrical and mode-hybridization dispersion control, devices are engineered for soliton generation while also maintaining optical factors as high as 80 million. Electronics-bandwidth-compatible (20 GHz) soliton mode locking is achieved with low pumping powers (parametric oscillation threshold powers as low as 5.4 mW). These are the shortest wavelength soliton microcombs demonstrated to date and could be used in miniature optical clocks. The results should also extend to visible and potentially ultra-violet bands.
Cite
@article{arxiv.1705.06703,
title = {Towards visible soliton microcomb generation},
author = {Seung Hoon Lee and Dong Yoon Oh and Qi-Fan Yang and Boqiang Shen and Heming Wang and Ki Youl Yang and Yu-Hung Lai and Xu Yi and Xinbai Li and Kerry Vahala},
journal= {arXiv preprint arXiv:1705.06703},
year = {2017}
}
Comments
Seung Hoon Lee, Dong Yoon Oh, Qi-Fan Yang, Boqiang Shen and Heming Wang contributed equally to this work