Perfect absorber supported by optical Tamm states in plasmonic waveguide

State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, China.
Optics Express (Impact Factor: 3.49). 09/2011; 19(19):18393-8. DOI: 10.1364/OE.19.018393
Source: PubMed


Based on a two-dimensional plasmonic metal-dielectric-metal (MDM) waveguide with a thin metallic layer and a dielectric photonic crystal in the core, a novel absorber at visual and near-infrared frequencies is presented. The absorber spectra and filed distributions are investigated by the transfer-matrix-method and the finite-difference time-domain method. Numerical results show that attributing to excitation of the optical Tamm states in the MDM waveguide core, the optical wave is trapped in the proposed structure without reflection and transmission, leading to perfect absorption as high as 0.991. The proposed absorber can find useful application in all-optical integrated photonic circuits.

18 Reads
  • Source
    • "Different with the optical tamm states reported in Refs. [21] [22] [23] where the reflection dip results in a high transmission, the optical tamm states here are heavily absorbed by the metallic loss and trapped in the TML interface [20]. As a result, it leads to a near-unity absorption peak at the reflection dip, as depicted in Fig. 2 with black line. "
    [Show abstract] [Hide abstract]
    ABSTRACT: Based on a two-dimensional plasmonic metal-dielectric-metal waveguide with a thin metallic layer and dual nanocavites inserted in the core, a novel nanostructured absorber is presented. A transfer matrix model for the proposed structure is established, and the optical spectra are investigated. Design results show that a narrow reflection spectrum occurs at position of the near-unity absorption, and is significantly influenced by the environment. It is able to generate a sensitivity as high as 1000 nm/RIU, which be used as an excellent sensing platform for chemical and biochemically relevant molecules.
    Photonics and Optoelectronics (SOPO), 2012 Symposium on; 05/2012
  • [Show abstract] [Hide abstract]
    ABSTRACT: We demonstrate that lasing can be obtained with the Tamm plasmon modes appearing at the interface between a multilayered dielectric structure and a metal. The sample consists in InGaAs/GaAs quantum wells embedded in an AlAs/AlGaAs Bragg reflector, on top of which a silver film was evaporated. A superlinear increase of the emission is observed under optical pumping as well as a drastic concentration of the emission pattern around the vertical direction, evidencing a lasing effect. Due to the particular features of these surface modes, Tamm lasers open interesting perspectives for the realization of integrated microlasers.
    Applied Physics Letters 03/2012; 100(12). DOI:10.1063/1.3697641 · 3.30 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: We demonstrate theoretically the existence of one-way Tamm plasmon-polaritons on the interface between magnetophotonic crystals and conducting metal oxides. In contrast to conventional surface plasmon-polaritons (SPPs), Tamm plasmon-polariton (TPPs) occur at frequencies above the bulk plasma frequency of the conducting materials, provided that the dispersion curves of such surface modes lie outside the light cone for the conducting oxides and simultaneously fall into the photonic band gap of the magnetophotonic crystal. The nonreciprocal properties of TPPs are caused by violation of the periodicity and time reversal symmetry in the structure. Calculations on the field distribution and transmission spectra through the structure are employed to confirm the theoretical results, which could potentially impact on a broad range of SPP-related phenomena in applications.
    Physical review. B, Condensed matter 10/2012; 87(4). DOI:10.1103/PhysRevB.87.045406 · 3.66 Impact Factor
Show more

Similar Publications