Imaging light scattered by a subwavelength nanofiber, from near field to far field - Archive ouverte HAL
Journal Articles Optics Express Year : 2019

Imaging light scattered by a subwavelength nanofiber, from near field to far field

Abstract

We present a direct experimental investigation of the optical field distribution around a suspended tapered optical nanofiber by means of a fluorescent scanning probe. Using a 100 nm diameter fluorescent bead as a probe of the field intensity, we study interferences made by a nanofiber (400 nm diameter) scattering a plane wave (568 nm wavelength). Our scanning fluorescence near-field microscope maps the optical field over 36 µm 2 , with λ/5 resolution, from contact with the surface of the nanofiber to a few micrometers away. Comparison between experiments and Mie scattering theory allows us to precisely determine the emitter-nanofiber distance and experimental drifts.
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Dates and versions

hal-02024985 , version 1 (19-02-2019)

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Vivien Loo, Guillaume Blanquer, Maxime Joos, Quentin Glorieux, Yannick de Wilde, et al.. Imaging light scattered by a subwavelength nanofiber, from near field to far field. Optics Express, 2019, 27 (2), pp.350-357. ⟨10.1364/oe.27.000350⟩. ⟨hal-02024985⟩
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