Upconversion fluorescence imaging of erbium‐doped fluoride glass particles by apertureless SNOM

We have imaged fluorescent erbium‐doped fluoride glass particles by apertureless scanning near‐field optical microscopy. The optical excitation has been performed at λ = 780 nm whereas fluorescence emission has been collected around λ = 550 nm. This process, called upconversion by energy transfer, i...

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Published inJournal of microscopy (Oxford) Vol. 210; no. 3; pp. 198 - 202
Main Authors Fragola, A., Aigouy, L., De Wilde, Y., Mortier, M.
Format Journal Article
LanguageEnglish
Published Oxford, UK Blackwell Science Ltd 01.06.2003
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Abstract We have imaged fluorescent erbium‐doped fluoride glass particles by apertureless scanning near‐field optical microscopy. The optical excitation has been performed at λ = 780 nm whereas fluorescence emission has been collected around λ = 550 nm. This process, called upconversion by energy transfer, involves two erbium ions and is not linear. Besides an improvement of the lateral resolution, we have observed on some particles that the fluorescence is not homogeneously distributed, but is rather localized in some zones brighter than others. By making tip approach curves, we have also observed that the amount of fluorescence intensity scattered by the tip is increasing when the tip is approaching the sample surface.
AbstractList We have imaged fluorescent erbium-doped fluoride glass particles by apertureless scanning near-field optical microscopy. The optical excitation has been performed at lambda = 780 nm whereas fluorescence emission has been collected around lambda = 550 nm. This process, called upconversion by energy transfer, involves two erbium ions and is not linear. Besides an improvement of the lateral resolution, we have observed on some particles that the fluorescence is not homogeneously distributed, but is rather localized in some zones brighter than others. By making tip approach curves, we have also observed that the amount of fluorescence intensity scattered by the tip is increasing when the tip is approaching the sample surface.
Abstract We have imaged fluorescent erbium‐doped fluoride glass particles by apertureless scanning near‐field optical microscopy. The optical excitation has been performed at λ = 780 nm whereas fluorescence emission has been collected around λ = 550 nm. This process, called upconversion by energy transfer, involves two erbium ions and is not linear. Besides an improvement of the lateral resolution, we have observed on some particles that the fluorescence is not homogeneously distributed, but is rather localized in some zones brighter than others. By making tip approach curves, we have also observed that the amount of fluorescence intensity scattered by the tip is increasing when the tip is approaching the sample surface.
We have imaged fluorescent erbium‐doped fluoride glass particles by apertureless scanning near‐field optical microscopy. The optical excitation has been performed at λ = 780 nm whereas fluorescence emission has been collected around λ = 550 nm. This process, called upconversion by energy transfer, involves two erbium ions and is not linear. Besides an improvement of the lateral resolution, we have observed on some particles that the fluorescence is not homogeneously distributed, but is rather localized in some zones brighter than others. By making tip approach curves, we have also observed that the amount of fluorescence intensity scattered by the tip is increasing when the tip is approaching the sample surface.
Author Mortier, M.
Aigouy, L.
De Wilde, Y.
Fragola, A.
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Snippet We have imaged fluorescent erbium‐doped fluoride glass particles by apertureless scanning near‐field optical microscopy. The optical excitation has been...
We have imaged fluorescent erbium-doped fluoride glass particles by apertureless scanning near-field optical microscopy. The optical excitation has been...
Abstract We have imaged fluorescent erbium‐doped fluoride glass particles by apertureless scanning near‐field optical microscopy. The optical excitation has...
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SubjectTerms Apertureless
erbium
fluorescence
near‐field optics
tip
upconversion
Title Upconversion fluorescence imaging of erbium‐doped fluoride glass particles by apertureless SNOM
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