Near-visible integrated soliton microcombs with detectable repetition rates
Creators
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1.
California Institute of Technology
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2.
University of California, Santa Barbara
- 3. Anello Photonics, Santa Clara, CA, USA
Abstract
Integrated soliton microcombs benefit a wide range of conventional comb applications through their compactness and scalability. And applications such as optical clocks and biosensing have driven interest in their operation at wavelengths approaching the visible band. However, increasing normal dispersion and optical loss at shorter wavelengths make short pulse operation at low pumping power challenging, especially for detectable-rate microcombs. Here, low-pump-power, detectable-rate soliton microcombs are demonstrated from telecom to visible bands using ultra-low-loss silicon nitride waveguides. Wavelength-multiplexed operation spanning 2/3 octave is also demonstrated in a single device. The results fill a gap needed for realization of integrated self-referenced visible microcombs.
Copyright and License
© 2025, The Author(s). Open Access. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder.
Acknowledgement
The authors thank Myoung-Gyun Suh for loaning equipment, Selina Zhou, Shuman Sun, Doon Yoon Oh, Wei Zhang, and Hanfei Hou for helpful discussion. This work was supported by the National Science Foundation (Award Number 1908231) and the AFOSR (Award Number FA9550-23-1-0587).
Data Availability
All data contributing to this study are published at figshare (https://doi.org/10.6084/m9.figshare.28826630.v1).
Code Availability
The analysis codes are published at figshare (https://doi.org/10.6084/m9.figshare.28826630.v1).
Supplemental Material
Files
s41467-025-60157-x.pdf
Additional details
Related works
- Describes
- Journal Article: https://rdcu.be/e92y0 (URL)
Funding
- National Science Foundation
- 1908231
- United States Air Force Office of Scientific Research
- FA9550-23-1-0587
Dates
- Available
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2025-05-22Version of record
Caltech Custom Metadata
- Caltech groups
- Division of Engineering and Applied Science (EAS)
- Publication Status
- Published