High power mid-infrared supercontinuum (SC) laser sources are important for a wide range of applications in sensing, spectroscopy, imaging, defense, and security. Despite recent advances on high power mid-infrared SC laser sources using fluoride fibers, the lack of mid-infrared fibers with good chemical and thermal stability remains a significant technological challenge. Here we show that all solid fluorotellurite fibers we developed can be used as the nonlinear media for constructing 10-W-level mid-infrared SC laser sources. All solid fluorotellurite fibers are fabricated by using a rod-in-tube method. The core and cladding materials are ${\mathrm{TeO}}_2\text{-}{\mathrm{BaF}}_2\text{-}{\mathrm{Y}}_2{\mathrm{O}}_3$ and ${\mathrm{TeO}}_2$ modified fluoroaluminate glasses with good water resistance and high transition temperature ($\sim 424°\mathrm{C}$). By using a 60 cm long fluorotellurite fiber with a core diameter of 6.8 μm as the nonlinear medium and a high power 1980 nm femtosecond fiber laser as the pump source, we obtain 10.4 W SC generation from 947 to 3934 nm in the fiber for a pump power of $\sim 15.9\mathrm{W}$, and the corresponding optical-to-optical conversion efficiency is about 65%. The spectral broadening is caused by self-phase modulation, soliton fission, soliton self-frequency shift, and dispersive wave generation. Our results show that all solid fluorotellurite fiber can be used for constructing high power mid-infrared SC laser sources for real applications.

中文翻译：

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使用氟碲石纤维的高功率中红外超连续谱激光源

高功率中红外超连续谱（SC）激光源对于传感，光谱，成像，防御和安全领域的广泛应用至关重要。尽管最近在使用氟化物纤维的高功率中红外SC激光源方面取得了进展，但是缺乏具有良好化学和热稳定性的中红外纤维仍然是一项重大的技术挑战。在这里，我们表明，我们开发的所有固态氟碲石纤维都可用作构建10 W级中红外SC激光源的非线性介质。所有的固体氟碲石纤维都是通过使用管中棒法制备的。芯和包层材料是${\mathrm{特奥}}_{\mathrm{2个}}\text{--}{\mathrm{氟化钡}}_{\mathrm{2个}}\text{--}{\mathrm{ÿ}}_{\mathrm{2个}}{\mathrm{Ø}}_3$ 和 ${\mathrm{特奥}}_{\mathrm{2个}}$ 改性的氟铝酸盐玻璃，具有良好的耐水性和较高的转变温度（$〜424°\mathrm{C}$）。通过使用纤芯直径为6.8μm的长60 cm的氟碲石光纤作为非线性介质，并使用高功率1980 nm飞秒光纤激光器作为泵浦源，我们可以在947至3934 nm的泵浦光纤中获得10.4 W SC的产生。的力量$〜15.9\mathrm{w\; ^}$，相应的光-光转换效率约为65％。频谱展宽是由自相位调制，孤子裂变，孤子自频移和色散波产生引起的。我们的结果表明，所有的固体氟碲石光纤都可以用于构建实际应用的高功率中红外SC激光源。