Active Tera Hertz (THz) spoof surface plasmon polariton (SSPP) switch comprising the perfect conductor meta-material

The feasibility of realizing an active Tera Hertz (THz) switch by utilizing artificially corrugated perfect conductor meta-materials is reported in this paper by demonstrating that the strongly localized THz spoof surface plasmon polariton (SSPP) modes can be easily controlled by changing the refractive index of dielectrics inside a longitudinal metallic structure with a periodic array of grooves. Specifically, the paper shows that incorporation of electro-optical (EO) material such as a nematic liquid crystal (N-LC) into the plasmonic gap leads to a highly compact and efficient THz switch that is activated by a low voltage control-signal.

[1]  P. Siegel.  Terahertz Technology , 2001 .

[2]  H. Lezec,et al.  Extraordinary optical transmission through sub-wavelength hole arrays , 1998, Nature.

[3]  J. Roy Sambles,et al.  The resonant electromagnetic fields of an array of metallic slits acting as Fabry-Perot cavities , 2006 .

[4]  Daniel M. Mittleman,et al.  Metal wires for terahertz wave guiding , 2004, Nature.

[5]  J. Pendry,et al.  Surfaces with holes in them: new plasmonic metamaterials , 2005 .

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

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

[8]  Jürgen Jahns,et al.  Azimuthally polarized surface plasmons as effective terahertz waveguides. , 2005, Optics express.

[9]  Thomas W. Ebbesen,et al.  Surface-plasmon circuitry , 2008 .

[10]  N. Zheludev,et al.  Active plasmonics: Controlling signals in Au/Ga waveguide using nanoscale structural transformations , 2003, cond-mat/0310530.

[11]  D. Mittleman,et al.  T-ray imaging , 1996 .

[12]  Hoi Sing Kwok,et al.  Integrated liquid crystal optical switch based on total internal reflection , 2005 .

[13]  Stefan A Maier,et al.  Terahertz surface plasmon-polariton propagation and focusing on periodically corrugated metal wires. , 2006, Physical review letters.

[14]  M. Kawachi,et al.  2 × 2 optical waveguide matrix switch using nematic liquid crystal , 1982, IEEE Journal of Quantum Electronics.

[15]  Stefan A. Maier,et al.  Terahertz pulse propagation using plasmon-polariton-like surface modes on structured conductive surfaces , 2006 .

[16]  E. Linfield,et al.  Terahertz semiconductor-heterostructure laser , 2002, Nature.

[17]  M. Qiu,et al.  Enhanced transmission through periodic arrays of subwavelength holes: the role of localized waveguide resonances. , 2006, Physical review letters.

[18]  Davy P. Gaillot,et al.  Magnetic control of negative permeability metamaterials based on liquid crystals , 2008 .

[19]  D. E. Chang,et al.  A single-photon transistor using nanoscale surface plasmons , 2007, 0706.4335.

[20]  Steven G. Johnson,et al.  Improving accuracy by subpixel smoothing in the finite-difference time domain. , 2006, Optics letters.