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  • Title: Deep subwavelength confinement and giant enhancement of light field by a plasmonic lens integrated with a metal-insulator-metal vertical nanocavity.
    Author: Yue S, Li Z, Chen J, Gong Q.
    Journal: Opt Express; 2012 Aug 13; 20(17):19060-6. PubMed ID: 23038546.
    Abstract:
    A metal-insulator-metal vertical nanocavity is proposed to be integrated at the center of a plasmonic lens. Utilizing cavity resonance effect, the light intensity at the center of the integrated plasmonic lens gets enhancement up to 5500 times compared to that without the cavity, and the light field is tightly confined into a spot as small as 6.0 × 10(-3)λ(0)(2). The Purcell factor of the cavity reaches up to 1400, ensuring greatly enhanced light-matter interaction inside the cavity. Moreover, the proposed structure takes advantage of linearly polarized light excitation and easy fabrication.
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