Tunable and multichannel terahertz perfect absorber due to Tamm surface plasmons with graphene

In this paper, we have shown that perfect absorption at terahertz frequencies can be achieved by using a composite structure where graphene is coated on one-dimensional photonic crystal (1DPC) separated by a dielectric. Due to the excitation of optical Tamm states (OTSs) at the interface between the graphene and 1DPC, a strong absorption phenomenon occurs induced by the coupling of the incident light and OTSs. Although the perfect absorption produced by a metal–distributed Bragg reflector structure has been researched extensively, it is generally at a fixed frequency and not tunable. Here, we show that the perfect absorption at terahertz frequency not only can be tuned to different frequencies but also exhibits a high absorption over a wide angle range. In addition, the absorption of the proposed structure is insensitive to the polarization, and multichannel absorption can be realized by controlling the thickness of the top layer.

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

[2]  A. Ferrari,et al.  Graphene Photonics and Optoelectroncs , 2010, CLEO 2012.

[3]  G. Lu,et al.  Semiconducting graphene: converting graphene from semimetal to semiconductor. , 2013, Nanoscale.

[4]  S. Brand,et al.  Optical Tamm states above the bulk plasma frequency at a Bragg stack/metal interface , 2009 .

[5]  Andre K. Geim,et al.  The rise of graphene. , 2007, Nature materials.

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

[7]  Shuangchun Wen,et al.  Critical coupling with graphene-based hyperbolic metamaterials , 2014, Scientific Reports.

[8]  Hong-qiang Li,et al.  Experimental investigation of interface states in photonic crystal heterostructures. , 2008, Physical review. E, Statistical, nonlinear, and soft matter physics.

[9]  M. Koch,et al.  Terahertz spectroscopy and imaging – Modern techniques and applications , 2011 .

[10]  Sukosin Thongrattanasiri,et al.  Complete optical absorption in periodically patterned graphene. , 2012, Physical review letters.

[11]  R. E. Miles,et al.  Terahertz time-domain spectroscopy: A new tool for the study of glasses in the far infrared , 2005 .

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

[13]  J. Federici,et al.  Review of terahertz and subterahertz wireless communications , 2010 .

[14]  Franco Nori,et al.  Colloquium: Unusual resonators: Plasmonics, metamaterials, and random media , 2007, 0708.2653.

[15]  M De Vittorio,et al.  Graphene-based absorber exploiting guided mode resonances in one-dimensional gratings. , 2014, Optics express.

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

[17]  Sang Jun Lee,et al.  A THz plasmonics perfect absorber and Fabry-Perot cavity mechanism (Conference Presentation) , 2016, Optical Engineering + Applications.

[18]  Yan Zhang,et al.  The wide-angle perfect absorption based on the optical Tamm states , 2014 .

[19]  J. Zi,et al.  Transfer matrix method for optics in graphene layers , 2012, Journal of physics. Condensed matter : an Institute of Physics journal.

[20]  K. Novoselov,et al.  A roadmap for graphene , 2012, Nature.

[21]  Fenghua Shi,et al.  Unidirectional All-Optical Absorption Switch Based on Optical Tamm State in Nonlinear Plasmonic Waveguide , 2016, Plasmonics.

[22]  Masayoshi Tonouchi,et al.  Cutting-edge terahertz technology , 2007 .

[23]  J. M. Chamberlain,et al.  Tamm plasmon polaritons: Slow and spatially compact light , 2008 .

[24]  Baptiste Auguie,et al.  Critical coupling to Tamm plasmons , 2014, 1411.0608.

[25]  C. M. Randall,et al.  Refractive indices of germanium, silicon, and fused quartz in the far infrared. , 1967, Applied optics.

[26]  Hongxing Wu,et al.  Broadband terahertz absorption enabled by coating an ultrathin antireflection film on doped semiconductor. , 2016, Optics express.

[27]  I. Shelykh,et al.  Lossless interface modes at the boundary between two periodic dielectric structures , 2005 .

[28]  Tian Jiang,et al.  Polarization Insensitive Metamaterial Absorber with Wide Incident Angle , 2010 .

[29]  J. M. Chamberlain,et al.  Tamm plasmon-polaritons: Possible electromagnetic states at the interface of a metal and a dielectric Bragg mirror , 2007 .

[30]  N. Nagai,et al.  Abnormal dispersion of polymer films in the THz frequency region , 2004 .

[31]  Zhu Zhiyong,et al.  THz-TDS spectra study of polymer materials with different polarity , 2013 .

[32]  J. S. Gomez-Diaz,et al.  Analysis and design of terahertz antennas based on plasmonic resonant graphene sheets , 2012 .