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Optics Letters

Optics Letters

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  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 4 — Feb. 15, 2014
  • pp: 907–909

Coherent emission at 537  nm from IR-pumped erbium-doped silica microspheres

Van Hoi Pham, The Anh Nguyen, Quang Minh Ngo, and Roberto Coisson  »View Author Affiliations


Optics Letters, Vol. 39, Issue 4, pp. 907-909 (2014)
http://dx.doi.org/10.1364/OL.39.000907


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Abstract

Low pump threshold upconversion narrowband emission at 537 nm in a simple system of erbium-doped silica microsphere at the tip of a fiber is reported. The emission comes out radially (not from whispering gallery modes) and is strongly enhanced by a thin metal coating, in particular with platinum. This enhancement seems to be related to the coupling with surface plasmons. The emission wavelength does not correspond to any energy level differences of erbium in silica, and is the same that was reported earlier in a coated fiber.

© 2014 Optical Society of America

OCIS Codes
(140.3500) Lasers and laser optics : Lasers, erbium
(230.3990) Optical devices : Micro-optical devices
(140.3613) Lasers and laser optics : Lasers, upconversion
(140.3948) Lasers and laser optics : Microcavity devices

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: December 5, 2013
Revised Manuscript: January 2, 2014
Manuscript Accepted: January 2, 2014
Published: February 10, 2014

Citation
Van Hoi Pham, The Anh Nguyen, Quang Minh Ngo, and Roberto Coisson, "Coherent emission at 537  nm from IR-pumped erbium-doped silica microspheres," Opt. Lett. 39, 907-909 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-4-907

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