Optical gain in carbon nanotubes

Semiconducting single-wall carbon nanotubes (s-SWNTs) have proved to be promising material for nanophotonics and optoelectronics. Due to the possibility of tuning their direct band gap and controlling excitonic recombinations in the near-infrared wavelength range, s-SWNT can be used as efficient lig...

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Bibliographic Details
Published in:Applied physics letters 2010-06, Vol.96 (23), p.231105-231105-3
Main Authors: Gaufrès, Etienne, Izard, Nicolas, Le Roux, Xavier, Marris-Morini, Delphine, Kazaoui, Saïd, Cassan, Eric, Vivien, Laurent
Format: Article
Language:English
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Summary:Semiconducting single-wall carbon nanotubes (s-SWNTs) have proved to be promising material for nanophotonics and optoelectronics. Due to the possibility of tuning their direct band gap and controlling excitonic recombinations in the near-infrared wavelength range, s-SWNT can be used as efficient light emitters. We report the first experimental demonstration of room temperature intrinsic optical gain as high as 190   cm − 1 at a wavelength of 1.3   μ m in a thin film doped with s-SWNT. These results constitute a significant milestone toward the development of laser sources based on carbon nanotubes for future high performance integrated circuits.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.3443634