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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 1 — Jan. 8, 2007
  • pp: 137–142

Tunability of optofluidic distributed feedback dye lasers

Morten Gersborg-Hansen and Anders Kristensen  »View Author Affiliations


Optics Express, Vol. 15, Issue 1, pp. 137-142 (2007)
http://dx.doi.org/10.1364/OE.15.000137


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Abstract

We investigate the tunability of optofluidic distributed feedback (DFB) dye lasers. The lasers rely on light-confinement in a nano-structured polymer film where an array of nanofluidic channels constitutes a third order Bragg grating DFB laser resonator with a central phase-shift. The lasers are operated by filling the DFB laser resonator with a dye solution by capillary action and optical pumping with a frequency doubled Nd:YAG laser. The low reflection order of the DFB laser resonator yields low out-of-plane scattering losses as well as a large free spectral range (FSR), and low threshold fluences down to ~ 7 μJ/mm2 are observed. The large FSR facilitates wavelength tuning over the full gain spectrum of the chosen laser dye and we demonstrate 45 nm tunability using a single laser dye by changing the grating period and dye solution refractive index. The lasers are straight-forward to integrate on lab-on-a-chip microsystems, e.g. for novel sensor concepts, where coherent light in the visible range is desired.

© 2007 Optical Society of America

OCIS Codes
(130.3120) Integrated optics : Integrated optics devices
(140.2050) Lasers and laser optics : Dye lasers
(140.3490) Lasers and laser optics : Lasers, distributed-feedback
(140.3600) Lasers and laser optics : Lasers, tunable
(140.7300) Lasers and laser optics : Visible lasers

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: October 10, 2006
Revised Manuscript: December 22, 2006
Manuscript Accepted: December 23, 2006
Published: January 8, 2007

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

Citation
Morten Gersborg-Hansen and Anders Kristensen, "Tunability of optofluidic distributed feedback dye lasers," Opt. Express 15, 137-142 (2007)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-15-1-137


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References

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