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

Abstract

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.

Active control of surface plasmon polaritons with phase change materials

“…Non-diffractive SPP beams which maintain their intensity profile over long distances, have attracted considerable attention owing to their potential applications in nanophotonic devices. Typical non-diffractive SPP beams, such as Bessellike beam [39,40] and cosine-Gauss beam [41] which propagate in a straight line, are of greatest concern. The non-diffractive SPP beam can be generated through the interference of two line sources.…”

Simulation of On-Chip Broadband Photon Spin Router Base on Nondiffracting Surface Plasmon Beam Launching

“…One of the most effective and feasible solutions is to excite a non-diffracting SPP beam. Although a large number of investigations on non-diffracting SPP beams have been undertaken [24][25][26][27][28], to the best of our knowledge, non-diffracting SPP-beam-based spin routing devices with high tunability in multiple degrees of freedom have not been reported.…”

Bottle Beams in Nonlocally Defocusing Nonlinear Media

“…Recently, some researches have been studied a microscale nonparaxial optical bottle beams [27], a dynamic bottle beams [28] and a terahertz bottle beam [29]. In addition, owing to surface plasmon polaritons'(SPP) unique properties, it can simultaneously generate SPP Bessel-like beams and bottle beams [30].…”