Work

Power-Bandwidth Scaling of Resonantly Coupled Soliton Microcombs

Year: 2026

Type: preprint

Abstract: A soliton microcomb requires increasing pump power as its optical bandwidth is broadened. Resonant pumping through an auxiliary microresonator can reduce the power required to sustain a soliton, but simultaneously increases the power required for soliton formation. We show that this competition leads to optimal inter-resonator coupling, and the predicted minimum input pump power scales as the two-thirds power of the comb bandwidth, in contrast to the quadratic scaling under direct pumping. Experiments support the opposing power trends, providing a design rule for power-efficient, ultra-broadband soliton microcombs.

Source: arXiv (Cornell University)

DOI: 10.48550/arxiv.2609.19941

Authors: Luo, Xinrui, Zhu, Kaixuan, Wang, Yuanlei, Cheng, Yinke, Luo, Haoyang, Wang, Junqi, Yang, Yiwen, Xie, Zhenyu, Li, Bei-Bei, Gong, Qihuang, Yang, Qi-Fan

Institutions: Peking University, State Key Laboratory of Artificial Microstructure and Mesoscopic Physics, Chinese Academy of Sciences, Institute of Physics

Language: English

Topic: Advanced Fiber Laser Technologies

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: Peking University, National Science and Technology Major Project

Award: G6942622317

OpenAlex ID: W7213591734

Cites:

Cited by: 1

Related to: 10