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首页> 外文期刊>Optics Letters >Generation of radially polarized Bessel-Gaussian beams from c-cut Nd:YVO_4 laser
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Generation of radially polarized Bessel-Gaussian beams from c-cut Nd:YVO_4 laser

机译:c形切割Nd:YVO_4激光产生径向偏振贝塞尔-高斯光束

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摘要

We experimentally demonstrate the generation of radially polarized Bessel-Gaussian beams from a c-cut Nd:YVO_4 laser with a hemispherical cavity configuration by proper mode control. The output beam has an annular-shaped intensity distribution with radial polarization. When the beam is focused, the intensity pattern changes to a multi-ring, which is a typical characteristic of the lowest transverse mode of vector Bessel-Gaussian beam. Higher-order modes of vector Bessel-Gaussian beam are also observed from the same cavity by slightly changing the cavity alignment. The experimental results show a good agreement with the simulation results for both focal and far fields. The present method is a simple and direct way for generating vector Bessel-Gaussian beams.
机译:我们通过适当的模式控制实验证明了从具有半球形腔配置的C形切割Nd:YVO_4激光器产生径向偏振贝塞尔高斯光束。输出光束具有带有径向偏振的环形强度分布。当光束聚焦时,强度模式变为多环,这是矢量贝塞尔-高斯光束最低横向模式的典型特征。通过稍微改变腔的对准,也可以从同一腔中观察到矢量贝塞尔-高斯光束的高阶模。实验结果与聚焦和远场的仿真结果均显示出良好的一致性。本方法是用于生成矢量贝塞尔-高斯光束的简单直接的方法。

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