Ngcobo Sandile, Aït-Ameur Kamel, Passilly Nicolas, Hasnaoui Abdelkrim, Forbes Andrew
Council for Scientific and Industrial Research, National Laser Centre, Pretoria, South Africa.
Appl Opt. 2013 Apr 1;52(10):2093-101. doi: 10.1364/AO.52.002093.
In this paper we experimentally demonstrate the intracavity generation of selected Laguerre-Gaussian modes of variable radial order, from 0 to 5. Our technique requires only an amplitude mask made up of absorbing rings to be placed inside the cavity, with the ring radii selected to coincide with the zeros of the desired Laguerre-Gaussian mode. We demonstrate high mode purity and a mode volume proportional to the order of the mode. Our results suggest a possible route to high brightness diode-pumped solid-state laser sources.
在本文中，我们通过实验证明了腔内产生径向阶数从0到5可变的特定拉盖尔 - 高斯模式。我们的技术仅需在腔内放置一个由吸收环组成的振幅掩模，吸收环的半径被选定为与所需拉盖尔 - 高斯模式的零点重合。我们展示了高模式纯度以及与模式阶数成比例的模式体积。我们的结果为高亮度二极管泵浦固态激光源提供了一条可能的途径。
