Experimental study of near-field light collection efficiency of aperture fiber probe at near-infrared wavelengths

Nobuhiro Tsumori, Motoki Takahashi, Yoshiki Sakuma, Toshiharu Saiki

    Research output: Contribution to journalArticle

    5 Citations (Scopus)

    Abstract

    We examined the near-field collection efficiency of near-infrared radiation for an aperture probe.We used InAs quantum dots as ideal point light sources with emission wavelengths ranging from 1.1 to 1:6 μm. We experimentally investigated the wavelength dependence of the collection efficiency and compared the results with computational simulations that modeled the actual probe structure. The observed degradation in the collection efficiency is attributed to the cutoff characteristics of the gold-clad tapered waveguide, which approaches an ideal conductor at near-infrared wavelengths.

    Original languageEnglish
    Pages (from-to)5710-5713
    Number of pages4
    JournalApplied Optics
    Volume50
    Issue number29
    DOIs
    Publication statusPublished - 2011 Oct 10

    ASJC Scopus subject areas

    • Atomic and Molecular Physics, and Optics
    • Engineering (miscellaneous)
    • Electrical and Electronic Engineering

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