Designer surface plasmon dispersion on a one-dimensional periodic slot metasurface with glide symmetry.

In this Letter, we explore the dispersion of spoof surface plasmons supported by a single-layer glide-symmetric structure. This structure consists of an infinitely long double-notched slot perforated in a metal layer. The presence of a degeneracy of the two lowest-order modes at the Brillouin zone boundary, which have non-zero group velocity is explained and experimentally demonstrated. Further, the dependence of the band structure when glide-symmetric configuration is broken is also explored.

[1]  А. П. Горбач,et al.  МОДЕЛИРОВАНИЕ СВОЙСТВ ДВОЙНОГО ВОЛНОВОДНОГО ТРОЙНИКА В CST MICROWAVE STUDIO , 2018 .

[2]  W. Barnes,et al.  Surface plasmon subwavelength optics , 2003, Nature.

[3]  K. Tsia,et al.  Surface modes in two-dimensional photonic crystal slabs with a flat dielectric margin. , 2006, Optics express.

[4]  Qianfan Xu,et al.  Guiding and confining light in void nanostructure. , 2004, Optics letters.

[5]  J. Sambles,et al.  Direct observation of negative-index microwave surface waves , 2016, Scientific Reports.

[6]  Oscar Quevedo-Teruel,et al.  Ultrawideband Metasurface Lenses Based on Off-Shifted Opposite Layers , 2016, IEEE Antennas and Wireless Propagation Letters.

[7]  Simon A. R. Horsley,et al.  Thin metamaterial Luneburg lens for surface waves , 2013 .

[8]  R. H. Ritchie.  Plasma Losses by Fast Electrons in Thin Films , 1957 .

[9]  Cj Railton,et al.  European Conference on Antennas and Propagation , 2007 .

[10]  Tie Jun Cui,et al.  Conformal surface plasmons propagating on ultrathin and flexible films , 2012, Proceedings of the National Academy of Sciences.

[11]  J. Pendry,et al.  Mimicking Surface Plasmons with Structured Surfaces , 2004, Science.

[12]  J Bravo-Abad,et al.  Deep-subwavelength negative-index waveguiding enabled by coupled conformal surface plasmons. , 2014, Optics letters.

[13]  P. R. McIsaac,et al.  Consequences of symmetry in periodic structures , 1964 .

[14]  Francisco Medina,et al.  Theoretical and experimental exploration of finite sample size effects on the propagation of surface waves supported by slot arrays , 2017 .

[15]  J. Sáenz,et al.  Electromagnetic surface modes in structured perfect-conductor surfaces. , 2005, Physical review letters.

[16]  J. Sambles,et al.  Experimental Verification of Designer Surface Plasmons , 2005, Science.

[17]  Andrea Alù,et al.  Leaky-Wave Theory, Techniques, and Applications: From Microwaves to Visible Frequencies , 2015, Proceedings of the IEEE.

[18]  Eva Rajo-Iglesias,et al.  Design Guidelines for Gap Waveguide Technology Based on Glide-Symmetric Holey Structures , 2017, IEEE Microwave and Wireless Components Letters.

[19]  A. A. Oliner,et al.  Propagation in periodically loaded waveguides with higher symmetries , 1973 .

[20]  Qiang Cheng,et al.  Broadband and high‐efficiency conversion from guided waves to spoof surface plasmon polaritons , 2014 .

[21]  Zvonimir Sipus,et al.  Accurate Equivalent-Circuit Descriptions of Thin Glide-Symmetric Corrugated Metasurfaces , 2017, IEEE Transactions on Antennas and Propagation.

[22]  M. Erim,et al.  Optical surface modes of photonic crystals for dual-polarization waveguide , 2013 .

[23]  H. Kurt,et al.  Reduced Symmetry and Analogy to Chirality in Periodic Dielectric Media , 2014 .