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The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including by researchers from the Department of Computer & Information Sciences involved in mathematically structured programming, similarity and metric search, computer security, software systems, combinatronics and digital health.

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Nanoimprinted polymer lasers with threshold below 100 W/cm2 using mixed-order distributed feedback resonators

Wang, Yue Y. and Tsiminis, Georgios G. and Kanibolotsky, Alexander L. A.L. and Skabara, Peter J. P.J. and Samuel, Ifor D W I.D.W. and Turnbull, Graham A. G.A. (2013) Nanoimprinted polymer lasers with threshold below 100 W/cm2 using mixed-order distributed feedback resonators. Optics Express, 21 (12). pp. 14362-14367. ISSN 1094-4087

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Abstract

Organic semiconductor lasers were fabricated by UVnanoimprint lithography with thresholds as low as 57 W/cm2 under 4 ns pulsed operation. The nanoimprinted lasers employed mixed-order distributed feedback resonators, with second-order gratings surrounded by first-order gratings, combined with a light-emitting conjugated polymer. They were pumped by InGaN LEDs to produce greenemitting lasers, with thresholds of 208 W/cm2 (102 nJ/pulse). These hybrid lasers incorporate a scalable UV-nanoimprint lithography process, compatible with high-performance LEDs, therefore we have demonstrated a coherent, compact, low-cost light source.