中红外稀土掺杂碲酸盐玻璃和光纤

Mid-IR Rare Earth Doped Tellurite Glass and Optical Fiber

中红外稀土掺杂连续光纤激光在光声技术、红外制导、医疗手术、塑料加工以及5G通信等领域有着十分广阔的应用前景。然而,制备中红外稀土掺杂连续光纤激光器的光纤基质材料单一,再加上高增益光纤和器件的缺乏,大大限制了大功率单频连续光纤激光器的发展。本文对比了传统的石英光纤、氟化物光纤、硫系光纤和重金属氧化物光纤,最终将碲酸盐光纤作为阐述对象。重点阐述了国内外中红外稀土掺杂碲酸盐连续光纤激光的研究进展,目前2.0μm波段的最高输出功率为8.08 W、最高斜率效率为77%;3.0μm波段的理论模拟结果显示最高输出功率高达5.219 W、最高斜率效率可达40%。

Mid-infrared rare-earth doped continuous fiber laser has a wild application in the fields of photoacoustic technology,infrared countermeasures,medical surgery,plastic processing,5G communication,etc.However,the development of high-power single-frequency CW fiber lasers is greatly limited by the single fiber matrix material used to prepare mid-infrared rare earth doped CW fiber lasers and the lack of high-gain fibers and devices.In this paper,the traditional silica fiber,fluoride fiber,chalcogenide fiber and heavy metal oxide fiber are compared,and finally tellurite fiber is taken as the elaboration object.At present,the highest output power of 2.0μm band is 8.08 W,and the highest slope efficiency is 77%.Theoretical simulation results of 3.0μm band show that the highest output power is up to 5.219 W and the highest slope efficiency is up to 40%.