Study on holographic grating diffraction for Laguerre--Gaussian beam generation
Study on holographic grating diffraction for Laguerre--Gaussian beam generation
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DOI：
10.1088/1674-1056/17/5/037
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发表时间：
2008-05
影响因子：
1.7
通讯作者：
Yi-Dong Liu;Chun-Qing Gao;M. Gao
中科院分区：
文献类型：
--
作者：
Yi-Dong Liu;Chun-Qing Gao;M. Gao
拉盖尔-高斯光束作为一种具有螺旋位相结构的特殊模型，得到了广泛的研究。全息光栅法是产生拉盖尔-高斯光束并测量其轨道角动量的一种简便方法。但由于一些不可避免的不利因素，如入射光束的横向位移、角偏转和椭圆形入射轮廓等，实际效果有待重新评估。本文研究了上述三种不利因素对全息光栅法的影响。给出了衍射级模式分解的特征和轨道角动量本征态的相对功率。
Laguerre–Gaussian beams, as a special model with spiral phase structure, have been intensively investigated. Holographic grating method is a convenient method of generating Laguerre–Gaussian beams and measuring their orbital angular momenta. But due to some inevitable adverse factors such as lateral displacement, angular deflection and elliptical incident profile of incident beam, the practical effectiveness should be reevaluated. This paper is devoted to the study on the influences of the abovementioned three adverse factors on the holographic grating method. The characteristics of the mode decomposition of diffractive order and the relative powers of the orbital angular momentum eigen-states are also given.