We report the fabrication of widely tuneable optically pumped two-dimensional distributed feedback polymer lasers that utilize a red-emission fluorene copolymer as the active gain medium. The lasers exhibit efficient, low threshold operation and emit highly directional output beams as a result of the enhanced two-dimensional photonic confinement provided by the employed resonator. Their emission and operating characteristics are described in detail. We demonstrate that the very wide spectral range over which these lasers can be systematically tuned is in very good agreement with theoretical predictions based on a simple waveguide model. In addition, we show that the lasers have long operating lifetimes pulses and we discuss the impact that degradation has on the laser output characteristics.
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15 December 2004
Research Article|
December 02 2004
Two-dimensional distributed feedback lasers using a broadband, red polyfluorene gain medium
G. Heliotis;
G. Heliotis
Ultrafast Photonics Collaboration, Blackett Laboratory, Imperial College London
, Prince Consort Road, London SW7 2BZ, United Kingdom
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R. Xia;
R. Xia
Ultrafast Photonics Collaboration, Blackett Laboratory, Imperial College London
, Prince Consort Road, London SW7 2BZ, United Kingdom
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D. D. C. Bradley;
D. D. C. Bradley
a)
Ultrafast Photonics Collaboration, Blackett Laboratory, Imperial College London
, Prince Consort Road, London SW7 2BZ, United Kingdom
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G. A. Turnbull;
G. A. Turnbull
Ultrafast Photonics Collaboration, School of Physics and Astronomy, University of St. Andrews
, St. Andrews KY16 9SS, United Kingdom
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I. D. W. Samuel;
I. D. W. Samuel
Ultrafast Photonics Collaboration, School of Physics and Astronomy, University of St. Andrews
, St. Andrews KY16 9SS, United Kingdom
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P. Andrew;
P. Andrew
School of Physics, Thin Film Photonics Group,
University of Exeter
, Stocker Road, Exeter EX4 4QL, United Kingdom
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W. L. Barnes
W. L. Barnes
School of Physics, Thin Film Photonics Group,
University of Exeter
, Stocker Road, Exeter EX4 4QL, United Kingdom
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a)
Author to whom correspondence should be addressed; Electronic mail: d.bradley@imperial.ac.uk
J. Appl. Phys. 96, 6959–6965 (2004)
Article history
Received:
May 03 2004
Accepted:
September 03 2004
Citation
G. Heliotis, R. Xia, D. D. C. Bradley, G. A. Turnbull, I. D. W. Samuel, P. Andrew, W. L. Barnes; Two-dimensional distributed feedback lasers using a broadband, red polyfluorene gain medium. J. Appl. Phys. 15 December 2004; 96 (12): 6959–6965. https://doi.org/10.1063/1.1811374
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