Browsing by Author "Badenes, G."

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    A hybrid light source with integrated inorganic light-emitting diode and organic polymer distributed feedback grating
    (Institute of Physics Publishing Ltd., 2008) Butun, B.; Aydin, K.; Ulker, E.; Cheylan, S.; Badenes, G.; Forster, M.; Scherf, U.; Özbay, Ekmel
    We report a compact light source that incorporates a semiconductor light-emitting diode, nanostructured distributed feedback (DFB) Bragg grating and spin-coated thin conjugated polymer film. With this hybrid structure, we transferred electrically generated 390 nm ultraviolet light to an organic polymer via optical pumping and out-couple green luminescence to air through a second-order DFB grating. We demonstrate the feasibility of electrically driven, hybrid, compact light-emitting devices and lasers in the visible range.
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    Surface plasmon radiation forces
    (The American Physical Society, 2006-06) Volpe, Giovanni; Quidant, R.; Badenes, G.; Petrov, D.
    We report the first experimental observation of momentum transfer from a surface plasmon to a single dielectric sphere. Using a photonic force microscope, we measure the plasmon radiation forces on different polystyrene beads as a function of their distance from the metal surface. We show that the force magnitude at resonance is strongly enhanced compared to a nonresonant illumination. Measurements performed as a function of the probe particle size indicate that optical manipulation by plasmon fields has a strong potential for optical sorting.