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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Anthony J. Campillo
  • Vol. 32, Iss. 15 — Aug. 1, 2007
  • pp: 2197–2199

Raman lasing near 630 nm from stationary glycerol–water microdroplets on a superhydrophobic surface

A. Sennaroglu, A. Kiraz, M. A. Dündar, A. Kurt, and A. L. Demirel  »View Author Affiliations


Optics Letters, Vol. 32, Issue 15, pp. 2197-2199 (2007)
http://dx.doi.org/10.1364/OL.32.002197


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Abstract

We demonstrate, for the first time to our knowledge, Raman lasing from stationary microdroplets on a superhydrophobic surface. In the experiments, glycerol–water microdroplets with radii in the 11 15 μ m range were pumped at 532 nm with a pulsed, frequency-doubled Nd:YAG laser. Two distinct operation regimes of the microdroplets were observed: cavity-enhanced Raman scattering and Raman lasing. In the latter case, the Raman lasing signal was higher than the background by more than 30 dB . Investigation of the Raman spectra of various glycerol–water mixtures indicates that lasing occurs within the glycerol Raman band. Raman lasing was not sustained; rather, oscillation would occur in temporally separated bursts. Increasing the rate of convective cooling by nitrogen purging improved the lasing performance and reduced the average interburst separation from 2.3 to 0.4 s .

© 2007 Optical Society of America

OCIS Codes
(140.3550) Lasers and laser optics : Lasers, Raman
(190.5650) Nonlinear optics : Raman effect
(230.3990) Optical devices : Micro-optical devices
(230.5750) Optical devices : Resonators
(350.3950) Other areas of optics : Micro-optics

ToC Category:
Optical Devices

History
Original Manuscript: March 23, 2007
Revised Manuscript: June 7, 2007
Manuscript Accepted: June 8, 2007
Published: July 24, 2007

Citation
A. Sennaroglu, A. Kiraz, M. A. Dündar, A. Kurt, and A. L. Demirel, "Raman lasing near 630 nm from stationary glycerol-water microdroplets on a superhydrophobic surface," Opt. Lett. 32, 2197-2199 (2007)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-32-15-2197

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