Li Zhenrui, Jia Zhixu, Yao Chuanfei, Zhao Zhipeng, Li Nan, Hu Minglie, Ohishi Yasutake, Qin Weiping, Qin Guanshi
Opt Lett. 2020 Apr 1;45(7):1882-1885. doi: 10.1364/OL.383642.
In this Letter, we demonstrate 22.7 W mid-infrared (MIR) supercontinuum (SC) generation in all-solid fluorotellurite fibers. All-solid fluorotellurite fibers based on ${{\rm TeO}_2} {\text -} {{\rm BaF}_2}{\text -}{{\rm Y}_2}{{\rm O}_3}$TeO-BaF-YO and ${{\rm TeO}_2}$TeO modified fluoroaluminate glasses are fabricated by using a rod-in-tube method. By using a 0.6 m long fluorotellurite fiber with a core diameter of 11 µm as the nonlinear medium and a high-power 1.93-2.5 µm SC fiber laser as the pump source, we obtain 22.7 W SC generation from 0.93 to 3.95 µm in the fiber for a pump power of 39.7 W. The 10 dB bandwidth is about 1633 nm, and the corresponding spectral range is from 1890 to 3523 nm. The optical-to-optical conversion efficiency is about 57.2%. Our results show that all-solid fluorotellurite fibers are promising nonlinear media for constructing high-power MIR SC light sources.
在本信函中，我们展示了在全固态氟碲酸盐光纤中产生22.7 W的中红外（MIR）超连续谱（SC）。基于TeO₂ - BaF₂ - Y₂O₃和TeO₂改性氟铝酸盐玻璃的全固态氟碲酸盐光纤采用管中棒法制备。通过使用一根长度为0.6 m、芯径为11 µm的氟碲酸盐光纤作为非线性介质，并以高功率1.93 - 2.5 µm的超连续谱光纤激光器作为泵浦源，在泵浦功率为39.7 W时，我们在光纤中获得了从0.93至3.95 µm的22.7 W超连续谱产生。10 dB带宽约为1633 nm，相应的光谱范围为1890至3523 nm。光到光的转换效率约为57.2%。我们的结果表明，全固态氟碲酸盐光纤是构建高功率中红外超连续谱光源的有前景的非线性介质。
