Lin Di, Daniel J M O, Clarkson W A
Opt Lett. 2014 Jul 1;39(13):3903-6. doi: 10.1364/OL.39.003903.
In this Letter, we report a novel approach for directly exciting the lowest-order Laguerre-Gaussian (LG₀₁) donut mode with controllable handedness of the helical phase front trajectory in an end-pumped solid-state laser. Our approach is based on the use of a novel mode selection element consisting of two nanoscale thickness aluminum stripes to provide discrimination between LG₀₁ modes with opposite handedness. This scheme has been applied to a diode-pumped Nd:YAG laser to generate and switch between LG₀₁ modes with opposite handedness at output powers ~1 W at 1064 nm.
在本信函中，我们报告了一种在端面泵浦固态激光器中直接激发最低阶拉盖尔 - 高斯（LG₀₁）甜甜圈模式的新方法，该模式具有螺旋相位前沿轨迹的可控手性。我们的方法基于使用一种新型模式选择元件，该元件由两条纳米级厚度的铝条组成，用于区分具有相反手性的LG₀₁模式。此方案已应用于二极管泵浦的Nd:YAG激光器，以在1064 nm波长、输出功率约为1 W的情况下，产生具有相反手性的LG₀₁模式并在它们之间切换。
