High-resolution optical imaging of single magnetic flux quanta with a solid immersion lens
BUZDIN, Alexander
Laboratoire Photonique, Numérique et Nanosciences [LP2N]
Laboratoire Ondes et Matière d'Aquitaine [LOMA]
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Laboratoire Photonique, Numérique et Nanosciences [LP2N]
Laboratoire Ondes et Matière d'Aquitaine [LOMA]
Language
en
Article de revue
This item was published in
Optics Express. 2023-07, vol. 31, n° 15, p. 24194-24202
English Abstract
Magneto-optical imaging of quantized magnetic flux tubes in superconductors-Abrikosov vortices-is based on Faraday rotation of light polarization within a magneto-optical indicator placed on top of the superconductor. Due ...Read more >
Magneto-optical imaging of quantized magnetic flux tubes in superconductors-Abrikosov vortices-is based on Faraday rotation of light polarization within a magneto-optical indicator placed on top of the superconductor. Due to severe aberrations induced by the thick indicator substrate, the spatial resolution of vortices is usually well beyond the optical diffraction limit. Using a high refractive index solid immersion lens placed onto the indicator garnet substrate, we demonstrate wide field optical imaging of single flux quanta in a Niobium film with a resolution better than 600 nm and sub-second acquisition periods, paving the way to high-precision and fast vortex manipulation. Vectorial field simulations are also performed to reproduce and optimize the experimental features of vortex images.Read less <
English Keywords
Magneto-optical imaging
superconductor
SIL
vortex
immersion lens
ANR Project
Manipulation optique de quanta de flux individuels dans les supraconducteurs et applications - ANR-17-CE30-0018
Origin
Hal imported