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Optics Letters

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  • Editor: Anthony J. Campillo
  • Vol. 32, Iss. 21 — Nov. 1, 2007
  • pp: 3104–3106

Regenerative pulsation in silica microspheres

Young-Shin Park and Hailin Wang  »View Author Affiliations


Optics Letters, Vol. 32, Issue 21, pp. 3104-3106 (2007)
http://dx.doi.org/10.1364/OL.32.003104


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Abstract

Regenerative pulsation from whispering gallery modes excited by a continuous-wave laser beam is observed in silica microspheres that feature a diminishing thermal nonlinearity near 20 K . The regenerative pulsation arises from the competition between Kerr nonlinearity and the much reduced thermal nonlinearity, when the two nonlinearities with very different timescales are comparable in magnitude but opposite in sign.

© 2007 Optical Society of America

OCIS Codes
(190.3270) Nonlinear optics : Kerr effect
(190.4870) Nonlinear optics : Photothermal effects
(140.3945) Lasers and laser optics : Microcavities

ToC Category:
Nonlinear Optics

History
Original Manuscript: July 23, 2007
Revised Manuscript: September 10, 2007
Manuscript Accepted: September 12, 2007
Published: October 19, 2007

Citation
Young-Shin Park and Hailin Wang, "Regenerative pulsation in silica microspheres," Opt. Lett. 32, 3104-3106 (2007)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-32-21-3104


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References

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  16. We assume that optical absorption in silica is considerably smaller at low temperature than that at room temperature.

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