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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editor: Gregory W. Faris
  • Vol. 2, Iss. 10 — Oct. 31, 2007

Lasing droplets in a microfabricated channel

Melikhan Tanyeri, Richard Perron, and Ian M. Kennedy  »View Author Affiliations


Optics Letters, Vol. 32, Issue 17, pp. 2529-2531 (2007)
http://dx.doi.org/10.1364/OL.32.002529


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Abstract

Lasing from spherical microdroplets ejected into a liquid medium with a lower refractive index is observed in a microchannel. A microfabricated device that combines droplet production and excitation/detection has been utilized. Droplets of 50 μ m diameter containing a fluorescent dye were first detected and then excited through multimode fibers after their production at a T-junction. Images show intense lasing emission around the droplet rim. Spectra from the droplets exhibit morphology-dependent resonances that are redshifted relative to the bulk fluorescence emission from the dyes. The dependence of resonant peak intensities on the pump beam power is nonlinear.

© 2007 Optical Society of America

OCIS Codes
(170.6280) Medical optics and biotechnology : Spectroscopy, fluorescence and luminescence
(190.3970) Nonlinear optics : Microparticle nonlinear optics
(230.5750) Optical devices : Resonators
(260.5740) Physical optics : Resonance
(300.2530) Spectroscopy : Fluorescence, laser-induced

ToC Category:
Physical Optics

History
Original Manuscript: June 11, 2007
Manuscript Accepted: July 9, 2007
Published: August 17, 2007

Virtual Issues
Vol. 2, Iss. 10 Virtual Journal for Biomedical Optics

Citation
Melikhan Tanyeri, Richard Perron, and Ian M. Kennedy, "Lasing droplets in a microfabricated channel," Opt. Lett. 32, 2529-2531 (2007)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ol-32-17-2529

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