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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Anthony J. Campillo
  • Vol. 32, Iss. 2 — Jan. 15, 2007
  • pp: 166–168

Ultralow-threshold Raman lasing with CaF 2 resonators

Ivan S. Grudinin and Lute Maleki  »View Author Affiliations


Optics Letters, Vol. 32, Issue 2, pp. 166-168 (2007)
http://dx.doi.org/10.1364/OL.32.000166


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Abstract

We demonstrate efficient Raman lasing with CaF 2 whispering-gallery-mode resonators. Continuous-wave emission threshold is shown to be possible below 1 μ W with a 5 mm cavity, which is to our knowledge orders of magnitude lower than in any other Raman source. Low-threshold lasing is made possible by the ultrahigh optical quality factor of the cavity, of the order of Q = 5 × 10 10 . Stokes components of up to the fifth order were observed at a pump power of 160 μ W , and up to the eighth order at 1 mW . A lasing threshold of 15 μ W was also observed in a 100 μ m CaF 2 microcavity. Potential applications are discussed.

© 2006 Optical Society of America

OCIS Codes
(140.3550) Lasers and laser optics : Lasers, Raman
(160.4330) Materials : Nonlinear optical materials
(190.5650) Nonlinear optics : Raman effect
(220.1920) Optical design and fabrication : Diamond machining
(230.5750) Optical devices : Resonators
(240.4350) Optics at surfaces : Nonlinear optics at surfaces

ToC Category:
Optical Devices

History
Original Manuscript: August 1, 2006
Revised Manuscript: October 12, 2006
Manuscript Accepted: October 18, 2006
Published: December 23, 2006

Citation
Ivan S. Grudinin and Lute Maleki, "Ultralow-threshold Raman lasing with CaF2 resonators," Opt. Lett. 32, 166-168 (2007)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-32-2-166

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