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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 11 — May. 21, 2012
  • pp: 12487–12497

Upconversion luminescence and decay kinetics in a diode-pumped nanocrystalline Nd3+:YVO4 random laser

Renato Juliani Ribamar Vieira, Laércio Gomes, José Roberto Martinelli, and Niklaus Ursus Wetter  »View Author Affiliations


Optics Express, Vol. 20, Issue 11, pp. 12487-12497 (2012)
http://dx.doi.org/10.1364/OE.20.012487


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Abstract

Random lasing in nanocrystalline Nd3+:YVO4 powder is demonstrated. A method that analyzes the decay kinetics after long-pulse excitation is used to determine the laser characteristics. This method permits to measure the fractional contribution of spontaneous and stimulated emission as well as upconversion as a function of the pump intensity. We observed that maximum linewidth narrowing is achieved when the stimulated emission reaches 50% of fractional contribution in the backscattering cone.

© 2012 OSA

OCIS Codes
(140.3480) Lasers and laser optics : Lasers, diode-pumped
(290.1990) Scattering : Diffusion
(290.4210) Scattering : Multiple scattering

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: December 5, 2011
Revised Manuscript: April 18, 2012
Manuscript Accepted: April 18, 2012
Published: May 17, 2012

Citation
Renato Juliani Ribamar Vieira, Laércio Gomes, José Roberto Martinelli, and Niklaus Ursus Wetter, "Upconversion luminescence and decay kinetics in a diode-pumped nanocrystalline Nd3+:YVO4 random laser," Opt. Express 20, 12487-12497 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-11-12487


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