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Optics Letters

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  • Vol. 18, Iss. 10 — May. 15, 1993
  • pp: 762–764

Lasing emission from an evaporating layered microdroplet

M. Essien, R. L. Armstrong, and J. B. Gillespie  »View Author Affiliations


Optics Letters, Vol. 18, Issue 10, pp. 762-764 (1993)
http://dx.doi.org/10.1364/OL.18.000762


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Abstract

We report the first observations, to our knowledge, of lasing emission from a single, evaporating, layered, micrometer-sized droplet. The droplet consists of an ~7.9-μm-radius glass core covered by a liquid shell of an initial 3 × 10−4 M Rhodamine 6G dye-doped glycerin/water solution. After pumping by a doubled (532 nm) Nd:YAG pulsed laser, droplet lasing occurs over a range of shell thicknesses from ~14.5 to ~0.4 μm. At the smallest shell thickness, a dramatic increase in both the number and intensity of the lasing peaks occurs, in addition to a large (>40-nm) blue shift in the spectral bandwidth of lasing emission. A discussion of possible enhancement mechanisms responsible for these novel findings is given.

© 1993 Optical Society of America

History
Original Manuscript: December 7, 1992
Published: May 15, 1993

Citation
M. Essien, J. B. Gillespie, and R. L. Armstrong, "Lasing emission from an evaporating layered microdroplet," Opt. Lett. 18, 762-764 (1993)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-18-10-762


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