20.6 W Mid-Infrared Supercontinuum Generation in ZBLAN Fiber With Spectrum of 1.9–4.3 μm
| Autor: | Linyong Yang, Shuailin Liu, Bin Zhang, Jing Hou, Xuan He, Kaixin Deng |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Multi-mode optical fiber Silica fiber business.industry Pulse duration 02 engineering and technology Laser Atomic and Molecular Physics and Optics Supercontinuum law.invention chemistry.chemical_compound 020210 optoelectronics & photonics Optics chemistry law ZBLAN Fusion splicing 0202 electrical engineering electronic engineering information engineering Fiber business |
| Zdroj: | Journal of Lightwave Technology. 38:5122-5127 |
| ISSN: | 1558-2213 0733-8724 |
| DOI: | 10.1109/jlt.2020.2999730 |
| Popis: | A 20.6-W mid-infrared supercontinuum (MIR-SC) generation is demonstrated in a piece of step-index ZBLAN (ZrF4−BaF2−LaF3−AlF3−NaF) fiber. A silica-fiber-based SC laser operating at 1.9–2.6 μm is used as a pump source. Owing to the specially designed ZBLAN fiber which perfectly matches the pigtail of the pump source in mode-field-diameter, direct fusion splicing was achieved between the ZBLAN fiber and the pigtail of the pump source instead of being connected via a piece of transition fiber. The coupling loss of the fusion splicing joint between the silica fiber and the ZBLAN fiber was measured as 0.26 dB@2000 nm. Robust fiber endcap made of multimode AlF3 fiber also benefited high-power MIR-SC generation. Spectral and power characteristics of the generated SC under different pump pulse duration and pulse repetition rate were carefully studied. A 20.6-W SC was obtained with an overall spectral coverage and a 10-dB long wavelength edge of 1.92–4.29 μm and 4.08 μm, respectively. This is, to the best of the authors’ knowledge, the first demonstration of 20-W level SC laser based on ZBLAN fiber with long wavelength edge extending beyond 4 μm. |
| Databáze: | OpenAIRE |
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