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Proceedings Paper

Lasing droplets in a microfluidic T-junction device with integrated optics
Author(s): Melikhan Tanyeri; Richard Perron; Ian M. Kennedy
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Paper Abstract

Lasing from spherical microdroplets ejected into a liquid medium with lower refractive index is observed in a microchannel. A microfabricated device that combines the 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 (MDRs) which 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.

Paper Details

Date Published: 22 January 2007
PDF: 7 pages
Proc. SPIE 6465, Microfluidics, BioMEMS, and Medical Microsystems V, 64650E (22 January 2007); doi: 10.1117/12.698200
Show Author Affiliations
Melikhan Tanyeri, Univ. of California, Davis (United States)
Richard Perron, Univ. of California, Davis (United States)
Ian M. Kennedy, Univ. of California, Davis (United States)

Published in SPIE Proceedings Vol. 6465:
Microfluidics, BioMEMS, and Medical Microsystems V
Ian Papautsky; Wanjun Wang, Editor(s)

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