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R A Abram - One of the best experts on this subject based on the ideXlab platform.

  • optical tamm states above the bulk Plasma Frequency at a bragg stack metal interface
    Physical Review B, 2009
    Co-Authors: S Brand, M A Kaliteevski, R A Abram
    Abstract:

    We demonstrate theoretically that surface-plasmon polaritons, a form of optical Tamm state, can occur at the interface between a metal and a Bragg reflector at frequencies above the bulk Plasma Frequency of the metal. The frequencies of the excitations are within the photonic band gap of the Bragg reflector which provides the required evanescent decay on that side of the interface. At finite in-plane wave vector, the low value of the permittivity of the metal above its Plasma Frequency can lead to an imaginary normal wave vector component in the metal, which provides the localization on the other side of the interface. It is proposed that the necessary conditions can be realized using a GaAs/AlAs Bragg stack coated with a suitable conducting metal oxide having a bulk Plasma Frequency of 1 eV, but the concept is valid for other systems given an appropriate Plasma Frequency and photonic band-gap structure. The dispersion relations of the plasmon polaritons in the structures considered are calculated for both possible polarizations, and it is shown how the excitations result in distinct features in the predicted reflectivity spectra.

  • Optical Tamm states above the bulk Plasma Frequency at a Bragg stack/metal interface
    Physical Review B, 2009
    Co-Authors: S Brand, M A Kaliteevski, R A Abram
    Abstract:

    We demonstrate theoretically that surface-plasmon polaritons, a form of optical Tamm state, can occur at the interface between a metal and a Bragg reflector at frequencies above the bulk Plasma Frequency of the metal. The frequencies of the excitations are within the photonic band gap of the Bragg reflector which provides the required evanescent decay on that side of the interface. At finite in-plane wave vector, the low value of the permittivity of the metal above its Plasma Frequency can lead to an imaginary normal wave vector component in the metal, which provides the localization on the other side of the interface. It is proposed that the necessary conditions can be realized using a GaAs/AlAs Bragg stack coated with a suitable conducting metal oxide having a bulk Plasma Frequency of 1 eV, but the concept is valid for other systems given an appropriate Plasma Frequency and photonic band-gap structure. The dispersion relations of the plasmon polaritons in the structures considered are calculated for both possible polarizations, and it is shown how the excitations result in distinct features in the predicted reflectivity spectra.

  • Complex photonic band structure and effective Plasma Frequency of a two-dimensional array of metal rods.
    Physical Review B, 2007
    Co-Authors: S Brand, R A Abram, M A Kaliteevski
    Abstract:

    A number of simple analytic theories have been proposed to define an effective Plasma Frequency in two-dimensional (2D) periodic systems containing metallic elements such as an array of metal rods in a simple square lattice. Such metallic structures are considered using a Frequency-dependent plane-wave complex band structure approach. Detailed results are presented for the pass and stop bands for a range of rod diameters. In addition, the value of the effective Plasma Frequency is extracted and compared with the predictions of existing analytic models. For the structures considered the effective Plasma Frequency is in the THz regime.

Chien-jang Wu - One of the best experts on this subject based on the ideXlab platform.

  • Analysis of effective Plasma Frequency in a superconducting photonic crystal
    Journal of The Optical Society of America B-optical Physics, 2013
    Co-Authors: Chung An Hu, Tzong-jer Yang, Chien-jang Wu, Su Lin Yang
    Abstract:

    In this work, a theoretical analysis on the effective Plasma Frequency (EPF) for a one-dimensional superconductor dielectric photonic crystal is made. First, the EPF is extracted from the first photonic band calculated within the framework of transfer matrix method together with Bloch theorem in a periodic multilayer structure. We investigate the EPF as a function of the filling factor and the permittivity of the dielectric layer, and the operating temperature as well. Then, the EPF is comparatively studied by the analytical expression derived from the effective medium theory. It is found that both results are in fairly good agreement.

  • Magnetic-Field Dependence of Effective Plasma Frequency for a Plasma Photonic Crystal
    IEEE Photonics Journal, 2013
    Co-Authors: Tzu-chyang King, Tzong-jer Yang, Tingting Bian, Chien-jang Wu
    Abstract:

    The effective Plasma Frequency in a photonic crystal (PC) is defined as the lowest Frequency at which electromagnetic wave can start to propagate through the PC. In this paper, we theoretically investigate the effective Plasma Frequency fp, eff for a magnetized 1-D Plasma PC (PPC). The PPC is made of two constituents, i.e., the Plasma and the dielectric material like quartz. The effective Plasma Frequency in a PPC is obtained based on the calculated photonic band structure (PBS). It is found that fp, eff can be controlled by the externally applied static magnetic field, namely, fp, eff decreases significantly as the static magnetic field increases. This suggests that the Plasma layer in a PPC shows a dielectric-like behavior when the magnetic field is applied. In addition, in the presence of static magnetic field, fp, eff will be increased as a function of electron density and thickness of the Plasma layer. In the angular dependence of effective Plasma Frequency, we find that fp, eff is a decreasing function of angle of incidence in the absence of the static magnetic field. However, it becomes an increasing function of angle of incidence when the static magnetic field is applied. Finally, the effect of filling factor of the Plasma layer is also illustrated.

Jian Zi - One of the best experts on this subject based on the ideXlab platform.

  • effective Plasma Frequency in one dimensional metallic dielectric photonic crystals
    Applied Physics Letters, 2005
    Co-Authors: Xiaochuang Xu, Yonggang Xi, Jian Zi
    Abstract:

    Photonic band structures of one-dimensional (1D) metallic-dielectric photonic crystals (MDPCs) are studied theoretically. We show that a 1D MDPC can be considered as an effective metallic medium with a well-defined effective Plasma Frequency. This effective Plasma Frequency is found to be inversely proportional to the optical thickness of the dielectric layer and is independent of either the constituent metal or the thickness of the metallic layer. By increasing the optical thickness of the dielectric layer, the effective Plasma Frequency of a 1D MDPC can be depressed into extremely low frequencies such as far infrared or even below.

S Brand - One of the best experts on this subject based on the ideXlab platform.

  • optical tamm states above the bulk Plasma Frequency at a bragg stack metal interface
    Physical Review B, 2009
    Co-Authors: S Brand, M A Kaliteevski, R A Abram
    Abstract:

    We demonstrate theoretically that surface-plasmon polaritons, a form of optical Tamm state, can occur at the interface between a metal and a Bragg reflector at frequencies above the bulk Plasma Frequency of the metal. The frequencies of the excitations are within the photonic band gap of the Bragg reflector which provides the required evanescent decay on that side of the interface. At finite in-plane wave vector, the low value of the permittivity of the metal above its Plasma Frequency can lead to an imaginary normal wave vector component in the metal, which provides the localization on the other side of the interface. It is proposed that the necessary conditions can be realized using a GaAs/AlAs Bragg stack coated with a suitable conducting metal oxide having a bulk Plasma Frequency of 1 eV, but the concept is valid for other systems given an appropriate Plasma Frequency and photonic band-gap structure. The dispersion relations of the plasmon polaritons in the structures considered are calculated for both possible polarizations, and it is shown how the excitations result in distinct features in the predicted reflectivity spectra.

  • Optical Tamm states above the bulk Plasma Frequency at a Bragg stack/metal interface
    Physical Review B, 2009
    Co-Authors: S Brand, M A Kaliteevski, R A Abram
    Abstract:

    We demonstrate theoretically that surface-plasmon polaritons, a form of optical Tamm state, can occur at the interface between a metal and a Bragg reflector at frequencies above the bulk Plasma Frequency of the metal. The frequencies of the excitations are within the photonic band gap of the Bragg reflector which provides the required evanescent decay on that side of the interface. At finite in-plane wave vector, the low value of the permittivity of the metal above its Plasma Frequency can lead to an imaginary normal wave vector component in the metal, which provides the localization on the other side of the interface. It is proposed that the necessary conditions can be realized using a GaAs/AlAs Bragg stack coated with a suitable conducting metal oxide having a bulk Plasma Frequency of 1 eV, but the concept is valid for other systems given an appropriate Plasma Frequency and photonic band-gap structure. The dispersion relations of the plasmon polaritons in the structures considered are calculated for both possible polarizations, and it is shown how the excitations result in distinct features in the predicted reflectivity spectra.

  • Complex photonic band structure and effective Plasma Frequency of a two-dimensional array of metal rods.
    Physical Review B, 2007
    Co-Authors: S Brand, R A Abram, M A Kaliteevski
    Abstract:

    A number of simple analytic theories have been proposed to define an effective Plasma Frequency in two-dimensional (2D) periodic systems containing metallic elements such as an array of metal rods in a simple square lattice. Such metallic structures are considered using a Frequency-dependent plane-wave complex band structure approach. Detailed results are presented for the pass and stop bands for a range of rod diameters. In addition, the value of the effective Plasma Frequency is extracted and compared with the predictions of existing analytic models. For the structures considered the effective Plasma Frequency is in the THz regime.

M A Kaliteevski - One of the best experts on this subject based on the ideXlab platform.

  • optical tamm states above the bulk Plasma Frequency at a bragg stack metal interface
    Physical Review B, 2009
    Co-Authors: S Brand, M A Kaliteevski, R A Abram
    Abstract:

    We demonstrate theoretically that surface-plasmon polaritons, a form of optical Tamm state, can occur at the interface between a metal and a Bragg reflector at frequencies above the bulk Plasma Frequency of the metal. The frequencies of the excitations are within the photonic band gap of the Bragg reflector which provides the required evanescent decay on that side of the interface. At finite in-plane wave vector, the low value of the permittivity of the metal above its Plasma Frequency can lead to an imaginary normal wave vector component in the metal, which provides the localization on the other side of the interface. It is proposed that the necessary conditions can be realized using a GaAs/AlAs Bragg stack coated with a suitable conducting metal oxide having a bulk Plasma Frequency of 1 eV, but the concept is valid for other systems given an appropriate Plasma Frequency and photonic band-gap structure. The dispersion relations of the plasmon polaritons in the structures considered are calculated for both possible polarizations, and it is shown how the excitations result in distinct features in the predicted reflectivity spectra.

  • Optical Tamm states above the bulk Plasma Frequency at a Bragg stack/metal interface
    Physical Review B, 2009
    Co-Authors: S Brand, M A Kaliteevski, R A Abram
    Abstract:

    We demonstrate theoretically that surface-plasmon polaritons, a form of optical Tamm state, can occur at the interface between a metal and a Bragg reflector at frequencies above the bulk Plasma Frequency of the metal. The frequencies of the excitations are within the photonic band gap of the Bragg reflector which provides the required evanescent decay on that side of the interface. At finite in-plane wave vector, the low value of the permittivity of the metal above its Plasma Frequency can lead to an imaginary normal wave vector component in the metal, which provides the localization on the other side of the interface. It is proposed that the necessary conditions can be realized using a GaAs/AlAs Bragg stack coated with a suitable conducting metal oxide having a bulk Plasma Frequency of 1 eV, but the concept is valid for other systems given an appropriate Plasma Frequency and photonic band-gap structure. The dispersion relations of the plasmon polaritons in the structures considered are calculated for both possible polarizations, and it is shown how the excitations result in distinct features in the predicted reflectivity spectra.

  • Complex photonic band structure and effective Plasma Frequency of a two-dimensional array of metal rods.
    Physical Review B, 2007
    Co-Authors: S Brand, R A Abram, M A Kaliteevski
    Abstract:

    A number of simple analytic theories have been proposed to define an effective Plasma Frequency in two-dimensional (2D) periodic systems containing metallic elements such as an array of metal rods in a simple square lattice. Such metallic structures are considered using a Frequency-dependent plane-wave complex band structure approach. Detailed results are presented for the pass and stop bands for a range of rod diameters. In addition, the value of the effective Plasma Frequency is extracted and compared with the predictions of existing analytic models. For the structures considered the effective Plasma Frequency is in the THz regime.