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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 34, Iss. 4 — Feb. 15, 2009
  • pp: 482–484

On-chip green silica upconversion microlaser

Tao Lu, Lan Yang, Rob V.A. van Loon, Albert Polman, and Kerry J. Vahala  »View Author Affiliations

Optics Letters, Vol. 34, Issue 4, pp. 482-484 (2009)

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We demonstrate an erbium-doped silica toroidal microcavity upconversion laser on a silicon chip lasing in the visible spectral range ( 510 580 nm ) . The microcavity is pumped at 1458 nm by a tapered optical fiber coupled to the cavity and the lasing threshold is 690 μ W . Lasing is observed at room temperature despite the high nonradiative relaxation rates of Er in pure silica that usually precludes upconversion lasing from higher excited states. This is attributed to the very high circulating pump power in the high-Q microcavity ( Q > 10 7 ) .

© 2009 Optical Society of America

OCIS Codes
(140.3500) Lasers and laser optics : Lasers, erbium
(140.7300) Lasers and laser optics : Visible lasers
(140.3613) Lasers and laser optics : Lasers, upconversion

ToC Category:
Lasers and Laser Optics

Original Manuscript: November 5, 2008
Revised Manuscript: January 7, 2009
Manuscript Accepted: January 8, 2009
Published: February 11, 2009

Tao Lu, Lan Yang, Rob V. A. van Loon, Albert Polman, and Kerry J. Vahala, "On-chip green silica upconversion microlaser," Opt. Lett. 34, 482-484 (2009)

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