期刊
LASER PHYSICS LETTERS
卷 16, 期 10, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1612-202X/ab40a2
关键词
femtosecond solitons; widely tunable; mid-infrared; chalcogenide fibers
资金
- NSFC [61527823, 61378004, 61605058, 61827821, 11774132]
- Tsinghua National Laboratory for Information Science and Technology Cross-discipline Foundation
- Key Technology Research and Development Project of Jilin Province [20180201120GX]
- Major Science and Technology Tendering Project of Jilin Province [20170203012GX]
- Joint Foundation from Equipment Pre-research and Ministry of Education [6141A02022413]
- Outstanding Young Talent Fund Project of Jilin Province [20180520188JH]
- State Key Laboratory of Laser Interaction with Matter [SKLLIM1612]
- Opened Fund of the State Key Laboratory of Integrated Optoelectronics
We numerically investigated widely tunable femtosecond solitons spanning from 4.1 to 7.2 mu m in designed chalcogenide fibers with Iwo rings of air holes. The core was made of Ge15Sb15Se70 glass and the cladding glass was composed of Ge20As15S65. By using a 4.1 mu m fiber laser with a pulse width of 100 fs as the pump light and 1 m long chalcogenide microstructured fibers as the nonlinear media, widely tunable femtosecond solitons spanning from 4.1 to 7.2 mu m were observed, and the pulse width of these tunable Raman solitons remained below 150 fs. The efficiencies of the mid-infrared soliton could be up to over 80%, ranging from 4.1-6.8 mu m. Through ntunerical simulations, we also observed red-shifted dispersive waves varying from 10.2 to 8.9 mu m. Our simulated results show that the designed chalcogenide microstructured fibers are promising nonlinear media for generating tunable mid-infrared light sources.
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