Design principles for infrared wide-angle perfect absorber based on plasmonic structure.

An approach for designing a wide-angle perfect absorber at infrared frequencies is proposed. The technique is based on a perfectly impedance-matched sheet (PIMS) formed by plasmonic nanostructure. It is shown that the effective impedance is more physical meaningful and beneficial than effective medium in describing the electromagnetic properties of metamaterial absorber. As a specific implementation of this technique, a wide-angle polarization-independent dual-band absorber is numerically demonstrated at frequencies of 100THz and 280THz with absorption close to 100% simultaneously. Circuit models are utilized to describe the impedance property of localized plasmon modes and the results show good agreement with that retrieved from reflection coefficient at normal incidence.

[1]  Willie J Padilla,et al.  Design, theory, and measurement of a polarization-insensitive absorber for terahertz imaging , 2008, 0807.3390.

[2]  G. Shvets,et al.  Wide-angle infrared absorber based on a negative-index plasmonic metamaterial , 2008, 0807.1312.

[3]  Jing Wang,et al.  High performance optical absorber based on a plasmonic metamaterial , 2010 .

[4]  Costas M. Soukoulis,et al.  Wide-angle perfect absorber/thermal emitter in the terahertz regime , 2008, 0807.2479.

[5]  Willie J Padilla,et al.  Infrared spatial and frequency selective metamaterial with near-unity absorbance. , 2010, Physical review letters.

[6]  M. Hentschel,et al.  Infrared perfect absorber and its application as plasmonic sensor. , 2010, Nano letters.

[7]  Zeyu Zhao,et al.  Realizing near-perfect absorption at visible frequencies. , 2009, Optics express.

[8]  Sailing He,et al.  Omnidirectional, polarization-insensitive and broadband thin absorber in the terahertz regime , 2010 .

[9]  Harald Giessen,et al.  Synthesis of transmission line models for metamaterial slabs at optical frequencies , 2008 .

[10]  Huaiwu Zhang,et al.  Dual band terahertz metamaterial absorber: Design, fabrication, and characterization , 2009 .

[11]  J. Hao,et al.  Nearly total absorption of light and heat generation by plasmonic metamaterials , 2011 .

[12]  Huaiwu Zhang,et al.  The strong non-reciprocity of metamaterial absorber: characteristic, interpretation and modelling , 2009 .

[13]  Jeremy J. Baumberg,et al.  Localized and delocalized plasmons in metallic nanovoids , 2006 .

[14]  Willie J Padilla,et al.  A metamaterial absorber for the terahertz regime: design, fabrication and characterization. , 2008, Optics express.

[15]  Willie J Padilla,et al.  Perfect metamaterial absorber. , 2008, Physical review letters.

[16]  Jeremy J. Baumberg,et al.  Omnidirectional absorption in nanostructured metal surfaces , 2008 .

[17]  Willie J Padilla,et al.  Highly-flexible wide angle of incidence terahertz metamaterial absorber , 2008, 0808.2416.

[18]  Nader Engheta,et al.  Circuits with Light at Nanoscales: Optical Nanocircuits Inspired by Metamaterials , 2007, Science.

[19]  Qi-Ye Wen,et al.  Transmission line model and fields analysis of metamaterial absorber in the terahertz band. , 2009, Optics express.