Scottish Universities Physics Alliance, J. F. Allen Physics Research Laboratories, School of Physics and Astronomy, University of St. Andrews, St. Andrews, KY16 9SS, Scotland, UK.
Opt Lett. 2011 May 1;36(9):1566-8. doi: 10.1364/OL.36.001566.
We report optical guiding and laser action at around 1.9 μm in a Tm³⁺-doped fluorogermanate glass waveguide fabricated using ultrafast laser inscription. A monolithic laser cavity was constructed by directly butt coupling dielectric mirrors to each facet of the 6.0 mm long Tm³⁺-doped waveguide. When the waveguide was pumped by a Ti:sapphire laser tuned to 791 nm, laser oscillation was achieved at around 1.91 μm. This waveguide laser exhibited a maximum slope efficiency of 6% and a maximum output power of 32 mW when pumped with 620 mW of incident laser power.
我们报告了在使用超快激光刻写技术制备的掺铥氟锗酸盐玻璃波导中，约 1.9 μm 处的光导和激光作用。通过将介质反射镜直接对接在 6.0 毫米长的掺铥波导的每个表面上，构建了一个整体的激光腔。当波导被调谐到 791nm 的钛宝石激光器泵浦时，在约 1.91μm 处实现了激光振荡。当用 620mW 的入射激光功率泵浦时，该波导激光器的最大斜率效率为 6%，最大输出功率为 32mW。
