光子晶体激光产生的矢量涡旋光束的聚焦特性。

Focusing properties of vector vortex beams emitted by photonic-crystal lasers.

机构信息

Department of Electronic Science and Engineering, Kyoto University, Kyoto 615-8510, Japan.

出版信息

Opt Lett. 2012 Jun 15;37(12):2421-3. doi: 10.1364/OL.37.002421.

DOI:10.1364/OL.37.002421

Abstract

We experimentally investigate the focusing properties of first- and second-order vector beams and vector vortex beams generated by photonic-crystal lasers. When the azimuthal indices of the vector beam (l) and the phase dependence (n) match, strong intensity appears at the center of focus. Our theoretical analyses agree well with the experimental results and predict that the central intensity has circular polarization.

摘要

我们通过实验研究了由光子晶体激光产生的一阶和二阶矢量光束和矢量涡旋光束的聚焦特性。当矢量光束的角向指数(l)和相位依赖(n)匹配时，焦点处会出现很强的强度。我们的理论分析与实验结果吻合较好，并预测中心强度具有圆偏振。