Eutectic epsilon-near-zero metamaterial terahertz waveguides.

We present and analyze the unique phenomena of enhanced THz transmission through a subwavelength LiF dielectric rod lattice embedded in an epsilon-near-zero KCl host. Our experimental results in combination with theoretical calculations show that subwavelength waveguiding of terahertz radiation is achieved within an alkali-halide eutectic metamaterial as result of the coupling of Mie-resonance modes arising in the dielectric lattice.

[1]  Dai‐Sik Kim,et al.  Terahertz pinch harmonics enabled by single nano rods. , 2011, Optics express.

[2]  I. Vendik,et al.  How Far Are We from Making Metamaterials by Self‐Organization? The Microstructure of Highly Anisotropic Particles with an SRR‐Like Geometry , 2010 .

[3]  G. G. Stokes.  "J." , 1890, The New Yale Book of Quotations.

[4]  Yadong Xu,et al.  Total reflection and transmission by epsilon-near-zero metamaterials with defects , 2011 .

[5]  M. Kafesaki,et al.  Self-organization approach for THz polaritonic metamaterials. , 2012, Optics express.

[6]  Klaus Halterman,et al.  Total transmission and total reflection by zero index metamaterials with defects. , 2010, Physical review letters.

[7]  Barmak Heshmat,et al.  Efficient terahertz slot-line waveguides. , 2011, Optics express.

[8]  Nader Engheta,et al.  Tunneling of electromagnetic energy through subwavelength channels and bends using epsilon-near-zero materials. , 2006, Physical review letters.

[9]  G. Tayeb,et al.  A metamaterial for directive emission. , 2002, Physical review letters.

[10]  M. Wegener,et al.  Past achievements and future challenges in the development of three-dimensional photonic metamaterials , 2011 .

[11]  M. Kafesaki,et al.  A comparison of graphene, superconductors and metals as conductors for metamaterials and plasmonics , 2012, 1210.0640.

[12]  An intense tunable femtosecond gas-plasma THz source: Application in spectroscopic studies of polycyclic aromatic hydrocarbons , 2011 .

[13]  E. Palik.  Handbook of Optical Constants of Solids , 1997 .

[14]  M. Kafesaki,et al.  Epsilon near zero based phenomena in metamaterials , 2013 .

[15]  J. Llorca,et al.  Directionally solidified eutectic ceramic oxides , 2006 .

[16]  Alessandro Salandrino,et al.  Epsilon-near-zero metamaterials and electromagnetic sources: Tailoring the radiation phase pattern , 2007 .

[17]  M. Kafesaki,et al.  Two-dimensional polaritonic photonic crystals as terahertz uniaxial metamaterials , 2011 .

[18]  Maria Kafesaki,et al.  Backward wave radiation from negative permittivity waveguides and its use for THz subwavelength imaging. , 2012, Optics express.

[19]  Á. Larrea,et al.  NaCl-assisted growth of micrometer-wide long single crystalline fluoride fibres , 2005 .

[20]  Richard W Ziolkowski,et al.  Propagation in and scattering from a matched metamaterial having a zero index of refraction. , 2004, Physical review. E, Statistical, nonlinear, and soft matter physics.

[21]  J. Pendry,et al.  Negative refraction makes a perfect lens , 2000, Physical review letters.

[22]  Lixin Ran,et al.  Experimental observation of left-handed behavior in an array of standard dielectric resonators. , 2007, Physical review letters.