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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 20 — Oct. 1, 2007
  • pp: 12735–12742

Opto-fluidic ring resonator lasers based on highly efficient resonant energy transfer

Siyka I. Shopova, Jay M. Cupps, Po Zhang, Edward P. Henderson, Scott Lacey, and Xudong Fan  »View Author Affiliations

Optics Express, Vol. 15, Issue 20, pp. 12735-12742 (2007)

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We demonstrate an opto-fluidic ring resonator dye laser using highly efficient energy transfer. The active lasing material consists of a donor and acceptor mixture and flows in a fused silica capillary whose circular cross section forms a ring resonator and supports the whispering gallery modes (WGMs) of high Q-factors (>107). The excited states are created in the donor and transferred to the acceptor through the fluorescence resonant energy transfer (FRET), whose emission is coupled into the WGM. Due to the high energy transfer efficiency and high Q-factors, the acceptor exhibits a lasing threshold as low as 0.3 μJ/mm2. We further analyze the energy transfer mechanisms and find that non-radiative Förster transfer is the dominant effect to support the acceptor lasing. FRET lasers using cascade energy transfer and using quantum dots (QDs) as the donor are also presented. Our study will not only lead to development of novel microfluidic lasers with low lasing thresholds and excitation/emission flexibility, but also open an avenue for future laser intra-cavity bio/chemical sensing.

© 2007 Optical Society of America

OCIS Codes
(130.6010) Integrated optics : Sensors
(140.0140) Lasers and laser optics : Lasers and laser optics
(140.2050) Lasers and laser optics : Dye lasers
(170.4520) Medical optics and biotechnology : Optical confinement and manipulation
(230.5750) Optical devices : Resonators

ToC Category:
Lasers and Laser Optics

Original Manuscript: August 20, 2007
Revised Manuscript: September 13, 2007
Manuscript Accepted: September 18, 2007
Published: September 20, 2007

Virtual Issues
Vol. 2, Iss. 11 Virtual Journal for Biomedical Optics

Siyka I. Shopova, Jay M. Cupps, Po Zhang, Edward P. Henderson, Scott Lacey, and Xudong Fan, "Opto-fluidic ring resonator lasers based on highly efficient resonant energy transfer," Opt. Express 15, 12735-12742 (2007)

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