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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 6 — Mar. 15, 2014
  • pp: 1354–1357

Titanium-enhanced Raman microcavity laser

Nishita Deka, Ashley J. Maker, and Andrea M. Armani  »View Author Affiliations


Optics Letters, Vol. 39, Issue 6, pp. 1354-1357 (2014)
http://dx.doi.org/10.1364/OL.39.001354


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Abstract

Whispering gallery mode microcavities are ideally suited to form microlaser devices because the high circulating intensity within the cavity results in ultralow lasing thresholds. However, to achieve low-threshold Raman lasing in silica devices, it is necessary to have quality factors above 100 million. One approach to circumvent this restriction is to intercalate a sensitizer into the silica, which increases the Raman gain. In the present work, we demonstrate a Raman laser based on a titanium sensitized silica solgel coated toroidal microcavity. By tuning the concentration of the Ti, the Raman efficiency improves over 3× while maintaining sub-mW thresholds.

© 2014 Optical Society of America

OCIS Codes
(130.3120) Integrated optics : Integrated optics devices
(130.3130) Integrated optics : Integrated optics materials
(140.3550) Lasers and laser optics : Lasers, Raman
(160.6060) Materials : Solgel

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: November 13, 2013
Revised Manuscript: January 15, 2014
Manuscript Accepted: January 23, 2014
Published: March 5, 2014

Citation
Nishita Deka, Ashley J. Maker, and Andrea M. Armani, "Titanium-enhanced Raman microcavity laser," Opt. Lett. 39, 1354-1357 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-6-1354


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