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Lasing action assisted by long-range surface plasmons
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DOI：10.1002/lpor.201400052.png)
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It is shown that lasing action at subwavelength scales can be achieved in realistic plasmonic systems supporting long-range surface plasmons (LRSPPs). To this end, a general numerical framework has been developed that is able to accurately account for the full spatio-temporal lasing dynamics and the vastly different length-and time-scales featured by this class of systems. Starting from a loss compensation regime for propagating LRSPPs, it is shown how the introduction of an optical feedback mechanism induces the formation of a self-sustained laser oscillation at moderate pump intensities. The simplicity of the proposed subwavelength scale laser offers significant potential as a novel class of planar light sources in complex plasmonic circuits.
Keyword:
Plasmonic lasing
long-range surface plasmons
Purcell effect
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Integrated optical components utilizing long-range surface plasmon polaritons利用长程表面等离子体激元的集成光学元件
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