The generation of high-power, broadband supercontinuum spanning from visible to mid-infrared via incoherent beam combination in a GeO <sub>2</sub> -core fiber bundle
In this work, we experimentally demonstrate a high-power supercontinuum (SC) that covers from visible to mid-infrared (MIR) in a GeO2-core fiber (GCF) bundle via incoherent beam combination.In the experiment, the SC generation in a single GCF was initially explored, obtained a SC spanning from visible to MIR regions, with average power of less than 10 watts.To increase the output power, we fabricated a 31 high-power GCFbased tapered fiber bundle (H-GTFB), incoherently combining three channels of the previously mentioned replicas.This yielded a broadband SC spectrum with a maximum average power of 23.1 W and a spectral bandwidth covering 0.73 to 3.1 m.The obtained spectrum power fluctuation was measured over one hour, showing a root mean square (RMS) value of 0.7%.To the best of our knowledge, this represents the highest power SC from visible to MIR regions obtained in GCFs pumped by 1.55 m high-power pulses.
Authors
- Chaodi Chen
- Lele Yu
- Kai Xia (ORCID: https://orcid.org/0000-0002-9540-3317)
- Ruipeng Hou (ORCID: https://orcid.org/0009-0003-4194-2985)
- Chao Mei (ORCID: https://orcid.org/0000-0002-9212-9746)
- Xin Luo (ORCID: https://orcid.org/0000-0002-1740-2765)
- Zhicheng Zhang (ORCID: https://orcid.org/0009-0001-4804-1640)
- Xuzhao Zhang
- Qiuhua Nie
- Chonghao Huang
- Shixun Dai
- Peilong Yang
- Biaoqi Wen
Institutions
- Ningbo University (CN)
- Ningbo University of Technology (CN)
- Academy of Opto-Electronics (CN)
- Institute of Oceanography
Publication Details
- Journal
- High Power Laser Science and Engineering
- Published
- 2026-01-14
- DOI
- https://doi.org/10.1017/hpl.2026.10106
- Primary Topic
- Photonic Crystal and Fiber Optics
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Natural Science Foundation of China
- Natural Science Foundation of Ningbo