Researcher:
Çetin, Arif Engin

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Master Student

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Arif Engin

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Çetin

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Çetin, Arif Engin

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2009 - 20103

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Researcher Of Publications: search.filters.isAuthorOfPublication.5784289c-c675-4305-912d-d79165959974

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    Active control of focal length and beam deflection in a metallic nanoslit array lens with multiple sources
    (Optical Soc Amer, 2010) Department of Electrical and Electronics Engineering; Department of Physics; Department of Physics; Department of Electrical and Electronics Engineering; Department of Physics; Çetin, Arif Engin; Güven, Kaan; Müstecaplıoğlu, Özgür Esat; Master Student; Faculty Member; Faculty Member; College of Engineering; College of Sciences; College of Sciences; N/A; 52290; 1674
    We propose an all-optical method to actively control the transmission of nanoslit arrays for scanning and lensing applications. We show that by utilizing two lateral control slits, the transmitted beam can be actively steered. (C) 2010 Optical Society of America
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    PublicationOpen Access
    Effects of Bloch's hydrodynamic model on surface plasmon polariton dispersion curve and enhanced transmission of light through single nano-apertures
    (Society of Photo-optical Instrumentation Engineers (SPIE), 2009) Department of Physics; Department of Physics; Çetin, Arif Engin; Müstecaplıoğlu, Özgür Esat; Faculty Member; College of Sciences; N/A; 1674
    We have studied the surface plasmon theory with Bloch's hydrodynamic model. The results of the analysis done by Bloch model have been compared with the ones done with Drude model and the dominant differences between two models in valid frequency range have been shown. The transmittance of the slit embedded in a metal layer has been investigated by these models and the differences have been emphasized. An electron density dependent parameter defined by Bloch model has been used to control the transmission behavior of the light through nano-apertures. A system consisting of a nano-slit formed in a metal layer with a periodically textured surface used for beam focusing has been introduced and how the focusing capacity of the system is controlled by the parameter defined by Bloch model has been shown.
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    PublicationOpen Access
    Electrically tunable Dicke effect in a double-ring resonator
    (American Physical Society (APS), 2010) Department of Physics; Department of Physics; Çetin, Arif Engin; Müstecaplıoğlu, Özgür Esat; Faculty Member; College of Sciences; N/A; 1674
    We study the finite-element method analysis of the Dicke effect using numerical simulations in an all-optical system of an optical waveguide side-coupled to two interacting ring resonators in a liquid crystal environment. The system is shown to exhibit all the signatures of the Dicke effect under active and reversible control by an applied voltage.