Lasing in nanoimprinted two-dimensional photonic crystal band-edge lasers

V. Reboud, J. Romero-Vivas, P. Lovera, N. Kehagias, T. Kehoe, G. Redmond, C. M. Sotomayor Torres

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    24 Citations (Scopus)

    Abstract

    We demonstrate optically pumped polymer band-edge lasers based on a two-dimensional photonic crystal slab fabricated by nanoimprint lithography (NIL). Lasing was obtained at the photonic band-edge, where the light exhibits a low group velocity at the Γ point of the triangular lattice photonic crystal band structure. The active medium was composed of a dye chromophore-loaded polymer matrix directly patterned in a single step by nanoimprint lithography. Plane-wave and finite difference time domain algorithms were used to predict experimental lasing frequencies and the lasing thresholds obtained at different Γ points. A low laser threshold of 3 μJ/mm 2 was achieved in a defect-free photonic crystal thus showing the suitability of nanoimprint lithography to produce cost-efficient optically pumped lasers. © 2013 American Institute of Physics.
    Original languageEnglish
    Article number073101
    JournalApplied Physics Letters
    Volume102
    Issue number7
    DOIs
    Publication statusPublished - 18 Feb 2013

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