High-Gain Broadband Solid-State Optical Amplifier using a Semiconducting Copolymer

Authors

  • Dimali Amarasinghe,

    1. Ultrafast Photonics Collaboration Organic Semiconductor Center, SUPA School of Physics and Astronomy University of St Andrews, North Haugh, St. Andrews, Fife, KY16 9SS (UK)
    2. Current address: Chergui Group, Swiss Light Source Paul Scherrer Institute, CH-5232 Villigen PSI (Switzerland)
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  • Arvydas Ruseckas,

    1. Ultrafast Photonics Collaboration Organic Semiconductor Center, SUPA School of Physics and Astronomy University of St Andrews, North Haugh, St. Andrews, Fife, KY16 9SS (UK)
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  • Andreas E. Vasdekis,

    1. Ultrafast Photonics Collaboration Organic Semiconductor Center, SUPA School of Physics and Astronomy University of St Andrews, North Haugh, St. Andrews, Fife, KY16 9SS (UK)
    2. Current address: Ecole Polytechnique Federale de Lausanne, STI, IMT, LO BM4106, Station 17, 1015, Lausanne (Switzerland)
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  • Graham A. Turnbull,

    1. Ultrafast Photonics Collaboration Organic Semiconductor Center, SUPA School of Physics and Astronomy University of St Andrews, North Haugh, St. Andrews, Fife, KY16 9SS (UK)
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  • Ifor D. W. Samuel

    Corresponding author
    1. Ultrafast Photonics Collaboration Organic Semiconductor Center, SUPA School of Physics and Astronomy University of St Andrews, North Haugh, St. Andrews, Fife, KY16 9SS (UK)
    • Ultrafast Photonics Collaboration Organic Semiconductor Center, SUPA School of Physics and Astronomy University of St Andrews, North Haugh, St. Andrews, Fife, KY16 9SS (UK).
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  • We are grateful to the Engineering and Physical Sciences Research Council for financial support and to L. O'Faolain and T.F. Krauss for assistance with making the grating couplers.

Abstract

original image

A dilute fluorene copolymer produces enhanced optical amplification. High gain with 1000 times optical amplification and a long lifetime is achieve in only 1mm of the material, and exciton–exciton annihilation is suppressed.

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