量子光学学报, 2015, 21 (1): 86, 网络出版: 2015-04-14   

利用液晶空间光调制器产生高阶拉盖尔高斯光束

Generation of Higher-order Laguerre-Gaussian Beams by Liquid Crystal Spatial Light Modulators
作者单位
量子光学与光量子器件国家重点实验室 山西大学光电研究所, 山西 太原 030006
摘要
本文采用反射式纯相位液晶空间光调制器产生了实验需要的高阶拉盖尔高斯光束.理论上详细计算了生成高阶拉盖尔高斯(Laguerre-Gaussian)光束的最优参数选择,用MATLAB编写程序,制作产生高阶LG光束的相息图.通过CCD采集图像数据,观测了以平面波入射生成拉盖尔高斯光束的强度分布,并利用干涉法验证了产生高阶拉盖尔高斯光束的螺旋相位分布.在此基础上,对实验测得一维强度轮廓进行拟合分析并估算了实验产生LG光束的纯度.
Abstract
We used the reflective phase-only liquid crystal spatial light devices to generate the higher-order Laguerre-Gaussian beams in experiment.Theoretically we caculated the optimal parameters for generating LG beams in detail and used MATLAB program to make Kinoform.We collected the date by CCD,observed the intensity patterns of the generated LG beams from plan wave and proved the spiral phase information by interferometry.We concluded a fit analysis of the radial profiles of the measured mode patterns and estimated the purity of the generated LG beams.
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郭帅凤, 刘奎, 孙恒信, 张俊香, 郜江瑞. 利用液晶空间光调制器产生高阶拉盖尔高斯光束[J]. 量子光学学报, 2015, 21(1): 86. GUO Shuai-feng, LIU Kui, SUN Heng-xin, ZHANG Jun-xiang, GAO Jiang-rui. Generation of Higher-order Laguerre-Gaussian Beams by Liquid Crystal Spatial Light Modulators[J]. Acta Sinica Quantum Optica, 2015, 21(1): 86.

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