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

Research Area: Plasmonics and photonics Year: 2013
Type of Publication: Article Keywords: photonic crystals, lasers
  • V. Roboud
  • Javier Romero Vivas
  • P. Lovera
  • N. Kehagias
  • T. Kehoe
  • G. Redmond
  • C. M. Sotomayor Torres
Journal: Appl. Phys. Lett. Volume: 102
Pages: 073101
Month: February
The following article appeared in Applied Physics Letters Vol.102, Issue 7) and may be found at
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/mm2 was achieved in a defect-free photonic crystal thus showing the suitability of nanoimprint lithography to produce cost-efficient optically pumped lasers.
Copyright (2012) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.
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