Laser action along and near the optic axis of a holmium-doped KY(WO₄)₂ crystal.
Laser action along and near the optic axis of a holmium-doped KY(WO₄)₂ crystal.
复制标题
激光沿掺钬 KY(WO₄)2 晶体的光轴及其附近发生作用。
作者：
R. Cattoor;I. Manek;D. Rytz;L. Canioni;M. Eichhorn
我们展示了第一个（据我们所知）准三级锥形折射激光器，工作波长为 2 μm，在 2074 nm 时输出功率为 1.6 W，使用钬掺杂 KY(WO4)2 晶体。相对于吸收的泵浦功率，沿光轴的最大斜率效率已达到 52%。此外，还进行了绕光轴的激光操作。在这种情况下，最大输出功率达到了3W，斜率效率优于70%，这是该材料迄今为止报道的最佳性能。
We demonstrate the first (to our knowledge) quasi-three-level conical refraction laser operating at 2 μm, with 1.6 W of output power at 2074 nm, using a holmium-doped KY(WO4)2 crystal. A maximum slope efficiency of 52% has been achieved, along the optic axis with respect to the absorbed pump power. Furthermore, lasing operation around the optic axis has been performed. In this case, a maximum output power of 3 W has been reached, with a slope efficiency better than 70%, which are the best performances ever reported on this material.