Lasing droplets in a microfabricated channel

Melikhan Tanyeri, Richard Perron, Ian M. Kennedy

Research output: Contribution to journalArticle

54 Scopus citations

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 μm 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 red-shifted relative to the bulk fluorescence emission from the dyes. The dependence of resonant peak intensities on the pump beam power is nonlinear.

Original languageEnglish (US)
Pages (from-to)2529-2531
Number of pages3
JournalOptics Letters
Volume32
Issue number17
DOIs
StatePublished - Sep 1 2007

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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