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Lasing in nanoimprinted two-dimensional photonic crystal band-edge lasers
Reboud, V.; Romero-Vivas, J.; Lovera, Pierre; Kehagias, Nikolaos; Kehoe, Timothy; Redmond, Gareth; Sotomayor Torres, Clivia M.
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 C 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 C points. A low laser threshold of 3 mu J/mm(2) was achieved in a defect-free photonic crystal thus showing the suitability of nanoimprint lithography to produce cost-efficient optically pumped lasers. (C) 2013 American Institute of Physics. (
Keyword(s): Optical gain; Polymer; Lithography; Polymers; Photonic crystals; Nanolithography; Optical polymers; Optical fabrication
Publication Date:
Type: Journal article
Peer-Reviewed: Yes
Language(s): English
Institution: University College Cork
Citation(s): Reboud, V., Romero-Vivas, J., Lovera, P., Kehagias, N., Kehoe, T., Redmond, G. and Torres, C. M. S. (2013) 'Lasing in nanoimprinted two-dimensional photonic crystal band-edge lasers', Applied Physics Letters, 102(7), pp. 073101. doi: 10.1063/1.4790646
Publisher(s): AIP Publishing
File Format(s): application/pdf
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First Indexed: 2017-09-06 06:39:14 Last Updated: 2017-10-18 06:31:23