高能、超短脉冲、可调谐激光器用掺镱氟磷酸盐玻璃研究进展(英文)

Yb^(3+)-doped fluorophosphate glasses: a good candidate for high-energy, ultra-short-pulse, tunable fiber lasers

Yb3+与其它稀土离子相比有最简单的能级结构,这使它具有一些独特的性质,如避免激发态吸收,消除上转换和浓度猝灭等,因此它是高能输出激光器介质的理想掺杂离子。氟磷玻璃综合了氟化物玻璃和磷酸盐玻璃的优点,可降低磷酸盐的声子能量,改善其易吸湿性;提高氟化物玻璃的物理化学性能等,这使它成为稀土掺杂可调谐光纤激光器的很好的掺杂介质。众多研究表明,Yb3+掺杂氟磷玻璃是一种很有前途的激光工作物质。本文总结了Yb3+掺杂氟磷玻璃的特点,性质,结构及存在的问题。

In comparison with other rare_earth (RE) ions, Yb^(3+) has the simplest energy levels, which bring it some unique properties such as eliminating excited state absorption, avoiding upconversion and concentration quenching, thus make it a good dopant for laser media to realize high power laser output. Fluorophosphate (FP) glass can bring together both the advantages of fluoride glass and phosphate glass, like decreasing the phonon energy and improving the easy moistening property of phosphate glasses, enhancing the physics and chemical stability of fluoride glasses. This makes it a promising RE_doped fiber laser media with wide tunable ranges. Lots of researches showed Yb^(3+)doped FP glasses have a good future as laser media. This paper summarizes the characteristics, properties, structure and problems of Yb^(3+) doped fluorophosphate glass as an operation material for lasers.