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Polarization converter for higher-order laser beams using a single binary diffractive optical element as beam splitter

机译:使用单个二进制衍射光学元件作为分束器的高阶激光束的偏振转换器

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摘要

We propose a new approach to generating a pair of initial beams for a polarization converter that operates by summing up two opposite-sign circularly polarized beams. The conjugated pairs of vortex beams matched with laser modes are generated using binary diffractive optical elements (DOEs). The same binary element simultaneously serves two functions: a beam shaper and a beam splitter. Two proposed optical arrangements are compared in terms of alignment complexity and energy efficiency. The DOEs in question have been designed and fabricated. Natural experiments that demonstrate the generation of vector higher-order cylindrical beams have been conducted.
机译:我们提出了一种为偏振转换器生成一对初始光束的新方法,该方法通过将两个相反符号的圆偏振光束相加而工作。使用二元衍射光学元件(DOE)生成与激光模式匹配的共轭涡旋光束对。相同的二进制元素同时具有两个功能:光束整形器和光束分离器。在对准复杂度和能量效率方面比较了两个提出的光学装置。有关的DOE已设计和制造。已经进行了证明矢量高阶圆柱束产生的自然实验。

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