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Polarization Controllable Device for Simultaneous Generation of Surface Plasmon Polariton Bessel-Like Beams and Bottle Beams

机译:用于同时生成表面等离子体贝塞尔状梁和瓶光梁的偏振可控装置

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摘要

Realizing multiple beam shaping functionalities in a single plasmonic device is crucial for photonic integration. Both plasmonic Bessel-like beams and bottle beams have potential applications in nanophotonics, particularly in plasmonic based circuits, near field optical trapping, and micro manipulation. Thus, it is very interesting to find new approaches for simultaneous generation of surface plasmon polariton Bessel-like beams and bottle beams in a single photonic device. Two types of polarization-dependent devices, which consist of arrays of spatially distributed sub-wavelength rectangular slits, are designed. The array of slits are specially arranged to construct an X-shaped or an IXI-shaped array, namely X-shaped device and IXI-shaped devices, respectively. Under illumination of circularly polarized light, plasmonic zero-order and first-order Bessel-like beams can be simultaneously generated on both sides of X-shaped devices. Plasmonic Bessel-like beam and bottle beam can be simultaneously generated on both sides of IXI-shaped devices. By changing the handedness of circularly polarized light, for both X-shaped and IXI-shaped devices, the positions of the generated plasmonic beams on either side of device can be dynamically interchanged.
机译:实现单个等离子体装置中的多个光束整形功能对于光子集成至关重要。代位声学贝尔氏梁和瓶光梁都具有纳米光源的潜在应用,特别是在基于等离子体基的电路中,近场光学捕获和微操纵。因此,找到用于在单个光子器件中同时产生表面等离子体偏振子玻璃晶梁和瓶光梁的新方法非常有趣。设计了由空间分布的子波长矩形狭缝阵列组成的两种类型的偏振依赖性装置。狭缝阵列专门布置成分别构造X形或Ixi形阵列,即X形器件和IXI形器件。在圆偏振光的照明下,可以在X形器件的两侧同时产生等离子体零级和一阶贝塞尔状梁。等离子体底座梁和瓶光梁可以在Ixi形器件的两侧同时产生。通过改变圆偏振光的手性,对于X形和Ixi形器件,可以动态地互换设备的两侧产生的等离子体梁的位置。

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