福克斯和李致力于腔内激光束整形的方法变体。

Variant of the method of Fox and Li dedicated to intracavity laser beam shaping.

作者信息

Cagniot Emmanuel, Fromager Michael, Godin Thomas, Passilly Nicolas, Brunel Marc, Ait-Ameur Kamel

机构信息

Centre de Recherche sur les Ions, les Matériaux et la Photonique, Unité Mixte de Recherche 6252, Commissariat à l'Énergie Atomique, Centre National de la Recherche Scientifique, École Nationale Supérieure d’Ingénieurs de Caen, Université de Caen, 6 Bd Maréchal Juin, F-14050 Caen Cedex, France

出版信息

J Opt Soc Am A Opt Image Sci Vis. 2011 Mar 1;28(3):489-95. doi: 10.1364/JOSAA.28.000489.

DOI:10.1364/JOSAA.28.000489

PMID:21383833

Abstract

We present a variant of the method of Fox and Li [Bell Syst. Tech. J. 40, 453 (1961); Proc. IEEE 51, 80 (1963)] dedicated to intracavity laser beam shaping for resonators containing an arbitrary number of amplitude and phase diffractive optics. Contrary to Fox and Li, the starting point is the desired field. The latter is injected into the usual sequence of lenses representing just a single round trip, and the optimization process iterates until the input and the output fields match as much as possible. We illustrate this technique by deriving a simple model for generating single cylindrical TEM(p0) modes, thanks to a π-phase plate placed inside a plano-concave cavity. The experimental validation attests an excellent agreement with numerical predictions.

摘要

我们提出了一种Fox和Li方法的变体[《贝尔系统技术杂志》40, 453 (1961); 《IEEE会报》51, 80 (1963)]，该方法致力于对包含任意数量振幅和相位衍射光学元件的谐振器进行腔内激光束整形。与Fox和Li的方法不同，这里的起点是所需的场。将该场注入仅代表单次往返的常规透镜序列中，然后进行优化过程的迭代，直到输入场和输出场尽可能匹配。我们通过推导一个简单模型来说明该技术，该模型借助置于平凹腔内的π相位板来生成单圆柱TEM(p0)模式。实验验证表明与数值预测结果高度吻合。