Nanoimprinted Polymer Lasers With Threshold Below 100 W/Cm(2) Using Mixed-Order Distributed Feedback Resonators
Optics express(2013)
摘要
Organic semiconductor lasers were fabricated by UV-nanoimprint lithography with thresholds as low as 57 W/cm(2) 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 green-emitting lasers, with thresholds of 208 W/cm(2) (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. (C) 2013 Optical Society of America
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关键词
nanostructures,physics,lasers,organic materials,nanolithography,chemistry
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