Free-standing broadband low-loss optical metamaterial filter

In this paper, we demonstrate an ultra-thin, low-loss optical metamaterial filter with high transmission and near constant group delay across a broad pass-band from 3.0 to 3.5μ m. Deep-subwavelength air hole inclusions positioned at the corners of a conventional metallodiectric fishnet were used engineer the dispersive properties of the structure to have an impedance match to free space over the pass-band. The optical properties of the metamaterial filter were verified by experimentally fabricating and characterizing the optimized free-standing nano-notched fishnet. The measured experimental results agreed well with the simulated response, showing a high transmission band over the targeted wavelength band.

[1]  Metamaterial coatings for broadband asymmetric mirrors. , 2006, Optics letters.

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

[3]  Yuri S. Kivshar,et al.  Substrate-induced bianisotropy in metamaterials , 2010, 1006.1159.

[4]  R. Shelby,et al.  Experimental Verification of a Negative Index of Refraction , 2001, Science.

[5]  Vladimir M. Shalaev,et al.  Optical cloaking with metamaterials , 2006, physics/0611242.

[6]  Willie J Padilla,et al.  Composite medium with simultaneously negative permeability and permittivity , 2000, Physical review letters.

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

[8]  D. Werner,et al.  Conformal dual-band near-perfectly absorbing mid-infrared metamaterial coating. , 2011, ACS nano.

[9]  K. Balmain,et al.  Negative Refraction Metamaterials: Fundamental Principles and Applications , 2005 .

[10]  Shanhui Fan,et al.  Three-dimensional metamaterials with an ultrahigh effective refractive index over a broad bandwidth. , 2009, Physical review letters.

[11]  Seokho Yun,et al.  Low-loss impedance-matched optical metamaterials with zero-phase delay. , 2012, ACS nano.

[12]  V. Shalaev.  Optical negative-index metamaterials , 2007 .

[13]  David R. Smith,et al.  Extreme-angle broadband metamaterial lens. , 2010, Nature materials.

[14]  Douglas H. Werner,et al.  Genetic Algorithms in Electromagnetics , 2007 .

[16]  Zahyun Ku,et al.  Experimental demonstration of sidewall angle induced bianisotropy in multiple layer negative index metamaterials , 2009 .

[17]  Tatsuo Itoh,et al.  Electromagnetic metamaterials : transmission line theory and microwave applications : the engineering approach , 2005 .

[18]  David R. Smith,et al.  Broadband Ground-Plane Cloak , 2009, Science.

[19]  Nikolay I. Zheludev.  The road ahead for active controllable and quantum metamaterials , 2010 .

[20]  Yong-hee Lee,et al.  A terahertz metamaterial with unnaturally high refractive index , 2011, Nature.

[21]  Andrea Alù,et al.  Experimental verification of epsilon-near-zero metamaterial coupling and energy squeezing using a microwave waveguide. , 2008, Physical review letters.

[22]  David R. Smith,et al.  Metamaterial Electromagnetic Cloak at Microwave Frequencies , 2006, Science.