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Nondiffracting wave properties in radially and azimuthally symmetric optical axis phase plates

机译：径向和方位角对称的光轴相位板上的非衍射波特性

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摘要

A wave propagation analysis carried out in two kinds of q-plates having topological unit charge (1-plates), one plate with a radial orientation of the optical axis and the other with an azimuthal one, reveals that these devices admit nondiffracting Bessel beams as exact solutions of the vector Helmholtz’s equation. The phase shifts between the ordinary and the extraordinary waves in both structures were found to be different. The polarization-scrambling term in the Helmholtz equation is responsible for such differences, emphasizing that this term cannot be dropped in radial plates, contrary to the azimuthal case. A phase shift analysis suggests that these plates are relevant for the control of nonconventional polarization states of light. In this way, a novel redistribution of the spin-orbital angular momentum of these nondiffracting beams passing by the 1-plate is demonstrated, which could be useful for applications in classic and quantum regimes.
机译：在两种具有拓扑单位电荷的q板（1-板）中进行的波传播分析（一个板的光轴方向为径向，另一个板的方向为方位角）表明，这些装置允许无衍射贝塞尔光束作为向量Helmholtz方程的精确解。发现两种结构中的普通波和非常波之间的相移是不同的。亥姆霍兹方程式中的极化加扰项是造成这种差异的原因，强调了与方位角情况相反，该项不能在径向板中丢失。相移分析表明，这些板与光的非常规偏振态的控制有关。以这种方式，证明了经过1-平板的这些非衍射光束的自旋轨道角动量的新颖的重新分布，这对于经典和量子体系中的应用可能是有用的。

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  • 来源
    《Optics Letters》 |2009年第23期|p.3641-3643|共3页
  • 作者

    Pablo Vaveliuk1;

  • 作者单位

    1Faculdade de Tecnologia, Servicio Nacional de Aprendizagem Industrial SENAI-Cimatec, Avenida Orlando Gomes 1845 41650-010, Salvador, Bahia, Brazil (pablov@fisica.ufpb.br);

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