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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 43, Iss. 19 — Jul. 1, 2004
  • pp: 3829–3837

Fabrication and characterization of fluorescent rare-earth-doped glass-particle-based tips for near-field optical imaging applications

Lionel Aigouy, Yannick De Wilde, Michel Mortier, Jacques Giérak, and Eric Bourhis  »View Author Affiliations


Applied Optics, Vol. 43, Issue 19, pp. 3829-3837 (2004)
http://dx.doi.org/10.1364/AO.43.003829


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Abstract

Fluorescent rare-earth-doped glass particles glued to the end of an atomic force microscope tip have been used to perform scanning near-field optical measurements on nanostructured samples. The fixation procedure of the fluorescent fragment at the end of the tip is described in detail. The procedure consists of depositing a thin adhesive layer on the tip. Then a tip approach is performed on a fragment that remains stuck near the tip extremity. To displace the particle and position it at the very end of the tip, a nanomanipulation is achieved by use of a second tip mounted on piezoelectric scanners. Afterward, the particle size is reduced by focused ion beam milling. These particles exhibit a strong green luminescence where excited in the near infrared by an upconversion mechanism. Images obtained near a metallic edge show a lateral resolution in the 180–200-nm range. Images we obtained by measuring the light scattered by 250-nm holes show a resolution well below 100 nm. This phenomenon can be explained by a local excitation of the particle and by the nonlinear nature of the excitation.

© 2004 Optical Society of America

OCIS Codes
(110.3080) Imaging systems : Infrared imaging
(180.0180) Microscopy : Microscopy
(180.5810) Microscopy : Scanning microscopy
(260.3090) Physical optics : Infrared, far

History
Original Manuscript: January 23, 2004
Revised Manuscript: April 8, 2004
Published: July 1, 2004

Citation
Lionel Aigouy, Yannick De Wilde, Michel Mortier, Jacques Giérak, and Eric Bourhis, "Fabrication and characterization of fluorescent rare-earth-doped glass-particle-based tips for near-field optical imaging applications," Appl. Opt. 43, 3829-3837 (2004)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-43-19-3829

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