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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 9 — May. 6, 2013
  • pp: 10667–10675

Upconversion emission obtained in Yb3+-Er3+ doped fluoroindate glasses using silica microspheres as focusing lens

C. Pérez-Rodríguez, S. Ríos, I. R. Martín, L. L. Martín, P. Haro-González, and D. Jaque  »View Author Affiliations


Optics Express, Vol. 21, Issue 9, pp. 10667-10675 (2013)
http://dx.doi.org/10.1364/OE.21.010667


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Abstract

An intensity enhancement of the green upconversion emission from a codoped Er3+ -Yb3+ fluoroindate glass has been obtained by coating the glass surface with silica microspheres (3.8 µm diameter). The microspheres focus an incoming beam (λ ≈950 nm) on the surface of the fluoroindate glass. The green emission (λ ≈545 nm) of the Er3+ ions located in the microsphere focus was measured with a microscope in reflection mode, being the peak intensity 4.5 times the emission of the bare substrate. The transversal FWHM of the upconversion spot was experimentally determined by deconvolution with the experimental Point Spread Function of the system, obtaining a value of 309 nm. This value is in good agreement with Finite-Difference Time-Domain simulations taking into account the magnification of the image due to the microsphere.

© 2013 OSA

OCIS Codes
(110.0180) Imaging systems : Microscopy
(160.2540) Materials : Fluorescent and luminescent materials
(350.3950) Other areas of optics : Micro-optics

ToC Category:
Materials

History
Original Manuscript: November 14, 2012
Revised Manuscript: January 10, 2013
Manuscript Accepted: January 10, 2013
Published: April 24, 2013

Virtual Issues
Vol. 8, Iss. 6 Virtual Journal for Biomedical Optics

Citation
C. Pérez-Rodríguez, S. Ríos, I. R. Martín, L. L. Martín, P. Haro-González, and D. Jaque, "Upconversion emission obtained in Yb3+-Er3+ doped fluoroindate glasses using silica microspheres as focusing lens," Opt. Express 21, 10667-10675 (2013)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-9-10667


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