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Cavity-enhanced surface-plasmon resonance sensing: Modeling and performance

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    0428436 - ÚFE 2015 RIV GB eng J - Článek v odborném periodiku
    Giorgini, A. - Avino, S. - Malara, P. - Zullo, R. - Gaglio, G. - Homola, Jiří - De Natale, P.
    Cavity-enhanced surface-plasmon resonance sensing: Modeling and performance.
    Measurement Science and Technology. Roč. 25, č. 1 (2014), 015205. ISSN 0957-0233. E-ISSN 1361-6501
    Institucionální podpora: RVO:67985882
    Klíčová slova: optical resonators * optical sensors * cavity ring-down spectroscopy
    Kód oboru RIV: JA - Elektronika a optoelektronika, elektrotechnika
    Impakt faktor: 1.433, rok: 2014

    We investigate the performance of a surface-plasmon-resonance refractive-index (RI) sensor based on an optical resonator. The resonator transforms RI changes of liquid samples, interacting with the surface plasmon excited by near-infrared light, into a variation of the intra-cavity optical loss. Cavity ring-down measurements are provided as a proof of concept of RI sensing on calibrated mixtures. A characterization of the overall sensor response and noise features as well as a discussion on possible improvements is carried out. A reproducibility analysis shows that a resolution of 10 -7-10-8 RIU is within reach over observation times of 1-30 s. The ultimate resolution is set only by intrinsic noise features of the cavity-based method, pointing to a potential limit below 10-10 RIU/√Hz
    Trvalý link: http://hdl.handle.net/11104/0233799

     
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