Now showing items 1-9 of 9

    • Cavity formation in split ring resonators 

      Caglayan, H.; Bulu, I.; Loncar, M.; Ozbay, E. (Elsevier BV, 2008-12)
      We report that it is possible to obtain a cavity structure by the deformation of a unit cell of an split ring resonator (SRR) structure. We presented the Q-factor of the cavity resonance as 192 for an SRR-based single ...
    • Defect structures in metallic photonic crystals 

      Özbay, E.; Temelkuran, B.; Sigalas, M.; Tuttle, G.; Soukoulis, C. M.; Ho, K. M. (A I P Publishing LLC, 1996-12-16)
      We have investigated metallic photonic crystals built around a layer‐by‐layer geometry. Two different crystal structures (face‐centered‐tetragonal and tetragonal) were built and their properties were compared. We obtained ...
    • Enhancement and inhibition of photoluminescence in hydrogenated amorphous silicon nitride microcavities 

      Serpenguzel, A.; Aydinli, A.; Bek, A. (Optical Society of America, 1997-09-01)
      A Fabry-Perot microcavity is used for the enhancement and inhibition of photoluminescence in hydrogenated amorphous silicon nitride. The amplitude of the photoluminescence is enhanced 4 times, while its linewidth is reduced ...
    • Fabrication, characterization and simulation of plasmonic cavities 

      Karabıyık, Mustafa (Bilkent University, 2010)
      Surface plasmon polaritons (SPPs) originate from the collective oscillations of conduction electrons coupled with photons propagating at metal-dielectric interfaces. A uniform metallic gratings change the dispersion ...
    • Grating based plasmonic cavities 

      Şenlik, Servet Seçkin (Bilkent University, 2009)
      Surface plasmon polaritons are dipole carrying electromagnetic excitations occur- ing at metal-dielectric interfaces. Metallic periodic structures exhibit modi¯ed transmission and re°ection spectra owing to the interaction ...
    • Low-threshold Lasing eigenmodes of infinite periodic chain of quantum wires 

      Byelobrov, V.; Ctyroky, J.; Benson, T. M.; Sauleau, R.; Altintas, A.; Nosich, A. I. (Optical Society of America, 2010-10-26)
      We study the lasing eigenvalue problems for a periodic open optical resonator made of an infinite grating of circular dielectric cylinders standing in free space, in the E- and H-polarization modes. If possessing a ...
    • Observation of cavity structures in composite metamaterials 

      Caglayan, H.; Ozbay, E. (S P I E - International Society for Optical Engineering, 2010-07-29)
      We investigated the cavity structure by the deformation of a unit cell of a Composite Metamaterial (CMM) structure. We considered different cavity structures with different resonance frequencies and Q-factors. We observed ...
    • Plasmonic band gap cavities 

      Kocabaş, Aşkın (Bilkent University, 2008)
      Surface plasmon polaritons (SPP’s) are trapped electromagnetic waves coupled to free electrons in metals that propagate at the metal-dielectric interfaces. Due to their surface confinement and potential in sub-wavelength ...
    • Visible photoluminescence from planar amorphous silicon nitride microcavities 

      Serpengüzel, A.; Aydinli, A.; Bek, A.; Güre, M. (Optical Society of America, 1998)
      Fabry-Perot microcavities were used for the enhancement and inhibition of photoluminescence (PL) in a hydrogenated amorphous silicon nitride (a-SiNx:H) microcavity fabricated with and without ammonia. A planar microcavity ...