Mid-Infrared Ultraflat Broadband Supercontinuum Generation with 10 dB Bandwidth of 2340 nm in a Tapered Fluorotellurite Fiber
We demonstrate mid-infrared ultraflat broadband supercontinuum (SC) generation in a 40 cm long tapered fluorotellurite fiber pumped by a Raman soliton source. By tapering the end of the large-core-diameter fluorotellurite fiber, the dispersion is regulated and the nonlinear effect is enhanced, which...
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MDPI AG
2025-03-01
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| Online Access: | https://www.mdpi.com/2304-6732/12/4/297 |
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| author | Guochuan Ren Linjing Yang Chuanfei Yao Xuan Wang Luyao Pu Kaihang Li Ling Zhang Pingxue Li |
| author_facet | Guochuan Ren Linjing Yang Chuanfei Yao Xuan Wang Luyao Pu Kaihang Li Ling Zhang Pingxue Li |
| author_sort | Guochuan Ren |
| collection | DOAJ |
| description | We demonstrate mid-infrared ultraflat broadband supercontinuum (SC) generation in a 40 cm long tapered fluorotellurite fiber pumped by a Raman soliton source. By tapering the end of the large-core-diameter fluorotellurite fiber, the dispersion is regulated and the nonlinear effect is enhanced, which effectively extends the mid-infrared SC spectral range and increases the spectral flatness. Finally, we obtained an SC light source with a spectral range from 1.8 to 4.7 μm; the 10 dB bandwidth of the source completely covers 1.88–4.22 μm, which has the farthest flat spectral edge in fluorotellurite fibers. The output power of the SC laser is about 1.04 W, and the power ratio of those above 3 μm in the spectrum to the total SC is ~24%. The optical-to-optical conversion efficiency is about 75%. Our results show that tapering of fluorotellurite fiber is an effective method to further extend and flatten the mid-infrared SC. |
| format | Article |
| id | doaj-art-801cefe252b14dda9bdecc98418e6ed4 |
| institution | OA Journals |
| issn | 2304-6732 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photonics |
| spelling | doaj-art-801cefe252b14dda9bdecc98418e6ed42025-08-20T02:28:41ZengMDPI AGPhotonics2304-67322025-03-0112429710.3390/photonics12040297Mid-Infrared Ultraflat Broadband Supercontinuum Generation with 10 dB Bandwidth of 2340 nm in a Tapered Fluorotellurite FiberGuochuan Ren0Linjing Yang1Chuanfei Yao2Xuan Wang3Luyao Pu4Kaihang Li5Ling Zhang6Pingxue Li7State Key Laboratory of Materials Low-Carbon Recycling, Beijing University of Technology, Beijing 100124, ChinaState Key Laboratory of Materials Low-Carbon Recycling, Beijing University of Technology, Beijing 100124, ChinaState Key Laboratory of Materials Low-Carbon Recycling, Beijing University of Technology, Beijing 100124, ChinaState Key Laboratory of Materials Low-Carbon Recycling, Beijing University of Technology, Beijing 100124, ChinaState Key Laboratory of Materials Low-Carbon Recycling, Beijing University of Technology, Beijing 100124, ChinaState Key Laboratory of Materials Low-Carbon Recycling, Beijing University of Technology, Beijing 100124, ChinaKey Lab of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, ChinaState Key Laboratory of Materials Low-Carbon Recycling, Beijing University of Technology, Beijing 100124, ChinaWe demonstrate mid-infrared ultraflat broadband supercontinuum (SC) generation in a 40 cm long tapered fluorotellurite fiber pumped by a Raman soliton source. By tapering the end of the large-core-diameter fluorotellurite fiber, the dispersion is regulated and the nonlinear effect is enhanced, which effectively extends the mid-infrared SC spectral range and increases the spectral flatness. Finally, we obtained an SC light source with a spectral range from 1.8 to 4.7 μm; the 10 dB bandwidth of the source completely covers 1.88–4.22 μm, which has the farthest flat spectral edge in fluorotellurite fibers. The output power of the SC laser is about 1.04 W, and the power ratio of those above 3 μm in the spectrum to the total SC is ~24%. The optical-to-optical conversion efficiency is about 75%. Our results show that tapering of fluorotellurite fiber is an effective method to further extend and flatten the mid-infrared SC.https://www.mdpi.com/2304-6732/12/4/297mid-infrared supercontinuumtapered fluorotellurite fiberRaman soliton |
| spellingShingle | Guochuan Ren Linjing Yang Chuanfei Yao Xuan Wang Luyao Pu Kaihang Li Ling Zhang Pingxue Li Mid-Infrared Ultraflat Broadband Supercontinuum Generation with 10 dB Bandwidth of 2340 nm in a Tapered Fluorotellurite Fiber Photonics mid-infrared supercontinuum tapered fluorotellurite fiber Raman soliton |
| title | Mid-Infrared Ultraflat Broadband Supercontinuum Generation with 10 dB Bandwidth of 2340 nm in a Tapered Fluorotellurite Fiber |
| title_full | Mid-Infrared Ultraflat Broadband Supercontinuum Generation with 10 dB Bandwidth of 2340 nm in a Tapered Fluorotellurite Fiber |
| title_fullStr | Mid-Infrared Ultraflat Broadband Supercontinuum Generation with 10 dB Bandwidth of 2340 nm in a Tapered Fluorotellurite Fiber |
| title_full_unstemmed | Mid-Infrared Ultraflat Broadband Supercontinuum Generation with 10 dB Bandwidth of 2340 nm in a Tapered Fluorotellurite Fiber |
| title_short | Mid-Infrared Ultraflat Broadband Supercontinuum Generation with 10 dB Bandwidth of 2340 nm in a Tapered Fluorotellurite Fiber |
| title_sort | mid infrared ultraflat broadband supercontinuum generation with 10 db bandwidth of 2340 nm in a tapered fluorotellurite fiber |
| topic | mid-infrared supercontinuum tapered fluorotellurite fiber Raman soliton |
| url | https://www.mdpi.com/2304-6732/12/4/297 |
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