Browsing Advanced Research Laboratories (ARL) by Author "Aydınlı, Atilla"

Now showing items 1-10 of 10

    • Comparison of electron and hole charge-discharge dynamics in germanium nanocrystal flash memories 

      Akça, İmran B.; Dâna, Aykutlu; Aydınlı, Atilla; Turan, R. (AIP Publishing, 2008-02)
      Electron and hole charge and discharge dynamics are studied on plasma enhanced chemical vapor deposition grown metal-oxide-silicon germanium nanocrystal flash memory devices. Electron and hole charge and discharge currents ...

    • Coupled plasmonic cavities on moire surfaces 

      Balcı, Sinan; Karabıyık, Mustafa; Kocabaş, Aşkın; Kocabaş, Coşkun; Aydınlı, Atilla (Springer, 2010-08)
      Surface plasmon polariton (SPP) waveguides formed by coupled plasmonic cavities on metallic Moire surfaces have been investigated both experimentally and numerically. The Moire surface, fabricated by interference lithography, ...

    • Direct imaging of localized surface plasmon polaritons 

      Balcı, Sinan; Karademir, Ertuğrul; Kocabaş, Coşkun; Aydınlı, Atilla (Optical Society of America, 2011-08)
      In this Letter, we report on dark field imaging of localized surface plasmon polaritons (SPPs) in plasmonic waveguiding bands formed by plasmonic coupled cavities. We image the light scattered from SPPs in the plasmonic ...

    • Electro-optic and electro-absorption characterization of InAs quantum dot waveguides 

      Akça, İmran B.; Dana, Aykutlu; Aydınlı, Atilla; Rossetti, M.; Li, L.; Fiore, A.; Dağlı, N. (Optical Society of America, 2008-03)
      Abstract Optical properties of multilayer InAs quantum dot waveguides, grown by molecular beam epitaxy, have been studied under applied electric field. Fabry-Perot measurements at 1515 nm on InAs/GaAs quantum dot structures ...

    • Grating based plasmonic band gap cavities 

      Şenlik, S. Seçkin; Kocabaş, Aşkın; Aydınlı, Atilla (Optical Society of American (OSA), 2009-08)
      We report on a comparative study of grating based plasmonic band gap cavities. Numerically, we calculate the quality factors of the cavities based on three types of grating surfaces; uniform, biharmonic and Moiré surfaces. ...

    • Localization of surface plasmon polaritons in hexagonal arrays of Moiré cavities 

      Balcı, Sinan; Kocabaş, Aşkın; Kocabaş, Coşkun; Aydınlı, Atilla (AIP Publishing, 2011-01)
      In view of the progress on the confinement of light, we report on the dispersion characteristics of surface plasmon polaritons (SPPs) on two-dimensional Moire surfaces in the visible part of the electromagnetic spectrum. ...

    • Slowing down surface plasmons on a Moiré surface 

      Kocabaş, Aşkın; Şenlik, S. Seçkin; Aydınlı, Atilla (The American Physical Society, 2009-02)
      We have demonstrated slow propagation of surface plasmons on metallic Moiré surfaces. The phase shift at the node of the Moiré surface localizes the propagating surface plasmons and adjacent nodes form weakly coupled ...

    • Slowing surface plasmon polaritons on plasmonic coupled cavities by tuning grating grooves 

      Balcı, Sinan; Kocabaş, Aşkın; Kocabaş, Coşkun; Aydınlı, Atilla (American Institute of Physics, 2010-09)
      We investigate slow surface plasmon polaritons (SPPs) in plasmonic waveguiding bands formed by coupled plasmonic cavities on Moiŕ surfaces. We demonstrate controlling the group velocity and dispersion of the SPPs by varying ...

    • Spectroscopic ellipsometric study of Ge nanocrystals embedded in SiO 2 using parametric models 

      Basa, P.; Petrik, P.; Fried, M.; Dâna, Aykutlu; Aydınlı, Atilla; Foss, S.; Finstad, T. G. (Wiley, 2008-05)
      Ge-rich SiO2 layers on top of Si substrates were deposited using plasma enhanced chemical vapour deposition. Ge nanocrystals embedded in the SiO2 layers were formed by high temperature annealing. The samples were measured ...

    • Tunable surface plasmon resonance on an elastomeric substrate 

      Olcum, Selim; Kocabaş, Aşkın; Ertaş, Gülay; Atalar, Abdullah; Aydınlı, Atilla (Optical Society of American (OSA), 2009-05)
      In this study, we demonstrate that periods of metallic gratings on elastomeric substrates can be tuned with external strain and hence are found to control the resonance condition of surface plasmon polaritons. We have ...