title: High-resolution simultaneous microscopy of refractive index and fluorescent intensity distributions by using localized surface plasmons.
abstract: We propose a localized surface plasmon microscope that provides simultaneous imaging of refractive index and fluorescent intensity distributions. We show experimental images of fluorescent and transparent particles under circular pupil illumination to confirm simultaneous high-resolution imaging. Furthermore, we investigate applicability of annular pupil illumination employing two axicons to improve energy efficiency in the fluorescent imaging and find that a brighter image is obtainable by maintaining high spatial resolution for both imaging modes.
authors.affiliation: Division of Engineering for Composite Functions, Muroran Institute of Technology, Mizumoto 27-1, Muroran, Hokkaido 050-8585, Japan.
authors.forename: Goro
authors.initials: G
authors.lastname: Terakado
authors.forename: Jun
authors.initials: J
authors.lastname: Ning
authors.forename: Koyo
authors.initials: K
authors.lastname: Watanabe
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Kano
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D008856:Microscopy, Fluorescence / Q000295:instrumentation*; D012031:Refractometry / Q000295:instrumentation*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013050:Spectrometry, Fluorescence / Q000295:instrumentation*; D020349:Surface Plasmon Resonance / Q000295:instrumentation*