Lavelle John, O'Sullivan Créidhe
Department of Experimental Physics, National University of Ireland Maynooth, Co. Kildare, Ireland.
J Opt Soc Am A Opt Image Sci Vis. 2010 Feb 1;27(2):350-7. doi: 10.1364/JOSAA.27.000350.
A beam shaping method is presented where a diffractive optical element (DOE) is designed by optimizing the complex mode coefficient weights of a set of Gaussian beam modes. This method is compared with the more standard unidirectional approach. Differential evolution is used for the optimization in both the unidirectional and Gaussian beam mode optimization methods. For the particular transforms carried out, the Gaussian beam mode set optimization (GBMSO) approach achieved more optimal solutions. The GBMSO approach is extended to design DOEs that control the amplitude distribution of a beam at multiple planes, rather than at just a single plane (i.e., the far field).
提出了一种光束整形方法，其中通过优化一组高斯光束模式的复模系数权重来设计衍射光学元件（DOE）。将该方法与更标准的单向方法进行了比较。在单向和高斯光束模式优化方法中均使用差分进化进行优化。对于所进行的特定变换，高斯光束模式集优化（GBMSO）方法获得了更优的解。GBMSO方法被扩展用于设计能控制光束在多个平面而非仅单个平面（即远场）处的振幅分布的DOE。
