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Low-threshold nanoimprinted lasers using substructured gratings for control of distributed feedback

Martins, Emiliano R. and Wang, Yue and Kanibolotsky, Alexander L. and Skabara, Peter J. and Turnbull, Graham A. and Samuel, Ifor D W (2013) Low-threshold nanoimprinted lasers using substructured gratings for control of distributed feedback. Advanced Optical Materials, 1 (8). pp. 563-566.

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Abstract

A nanopatterned polymer design for lasers using substructured gratings to achieve low threshold lasing is presented. The approach provides complete control over the balance between optical feedback and output coupling. Polymer lasers are fabricated by nanoimprint lithography with threshold densities as low as 16 W cm-2, half that of reference distributed feedback lasers with conventional gratings.