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Evanescent Bessel light beams

机译:van逝贝塞尔光束

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摘要

The spatial structure and polarization of evanescent Bessel light beams excited in an optically less dense medium in conditions of total internal reflection is investigated in detail. TH- and TE-polarized Bessel beams and also their linear superposition are considered. The Pointing vector of evanescent BLBs are calculated. An existence of azimuthal and radial components of the energy flow and also of its z-component, oscillating with the radial coordinate, is established. The structure of the central maximum of a zero-order evanescent BLB is investigated and its diameter is shown being able to be reduced to submicron sizes.
机译:详细研究了在全内反射条件下在光学密度较小的介质中激发的van逝贝塞尔光束的空间结构和偏振态。考虑TH和TE偏振贝塞尔光束以及它们的线性叠加。计算e逝BLB的指向向量。建立了能量流的方位角和径向分量及其以径向坐标振荡的z分量的存在。研究了零级消逝BLB的中心最大值的结构,并显示了其直径可以减小到亚微米大小。

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