二元矩形位相光栅用于高斯光束的空间整形  

Binary rectangular phase gratings applied to spatial shaping of Gaussian beam

作　　者：张新平[1] 董丽萍[1] 张保华 

机构地区：[1]天津核工业理化工程研究院

出　　处：《激光技术》1995年第2期74-79,共6页Laser Technology

摘　　要：本文研究了透射式二元矩形位相光栅实现高斯光束空间整形的基本原理，并作了理论推导；提出了光栅加工的技术指标，对实验工作作了具体描述，并分析了实验结果。透射式二元矩形位相光栅的主要技术指标为：栅槽宽度：１．５ｍｍ；栅槽深度：０．５５μｍ；光栅有效尺寸：１５ｍｍ；透射率：大于９０％；波长覆盖：０．５５μｍ～０．６５μｍ；破坏阈值：平均功率１０Ｗ。整形参数：功率效率：大于７５％；能量效率：大于９０％；衍射距离要求：大于１０ｍ；整形后光束强度的径向非均匀起伏：小于９．３％。The study of basic principle and the theoretical analysis of the transmit-ted binary rectangular phase gratings for spatial shaping of Gaussian beam are presented in this paper.Practically,it is important to make the binary rectangular gratings.So the technical specifications of the gratings are summarized,and the experimental works and the experimental results are analyzed in details.Technical indices for the transmit-ted binary rectangular phase grating:width of the grating groove:1.5mm;depth of the grating groove:0.55μm;effective size of the grating:15mm;transmitivity:>90%;wavelength coverage:0.55μm～0.65μm;damage threshold:10W on average.Shaping parameters:power efficiency:>75%;energy efficiency:> 90 %;diffraction distance:>10m;radial fluctuation of beam intensity after shaping:<9.3%.

关 键 词：透射式 二元矩形 位相光栅 高斯光束 空间整形 

分 类 号：TN241[电子电信—物理电子学]