Browsing by Subject "Impact parameter"

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    Enhanced coupling to microsphere resonances with optical fibers
    (Optical Society of America, 1997) Serpengüzel, A.; Arnold, S.; Griffel, G.; Lock, J. A.
    Morphology-dependent resonances (MDR's) of polystyrene microspheres were excited by an optical fiber coupler. For optical elimination of the air-cladding interface at the optical fiber coupler surface, the microsphere was immersed in an index-matching oil. MDR's were observed, even though the relative refractive index between the microsphere and the oil was only 1.09. The observed MDR spectra are in good agreement with the generalized Lorenz-Mie theory and the localization principle. The scattering efficiency into each MDR is estimated as a function of the impact parameter by means of generalized Lorenz-Mie theory. (C) 1997 Optical Society of America.
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    ItemOpen Access
    Optical spectroscopy of microcavities
    (Springer, 1997) Serpengüzel, Ali; Arnold, S.; Lock, J. A.; Griffel, G.; Hakioğlu, Tuğrul; Shumovsky, Alexander S.
    Microcavities, such as microspheres, possess morphology-dependent resonances (MDR’s). In this chapter light coupling mechanisms to MDR’s is examined. The novel mechanism of excitation of the microsphere with an optical fiber coupler (OFC) provides spatially and spectrally selective, as well as enhanced light coupling to the MDR’s, when compared with the conventional plane wave excitation. The plane wave excitation is described by LorenzMie Theory. However, Generalized Lorenz-Mie Theory and the Localization Principle are used for the OFC excitation.