A surface-emitting distributed-feedback plasmonic laser

Li, X. F.; Yu, S. F.; Kumar, Ashwani
October 2009
Applied Physics Letters;10/5/2009, Vol. 95 Issue 14, p141114
Academic Journal
A surface-plasmon polariton (SPP) waveguide, which is composed of a high-index decoupling layer for the excitation of surface emission, a metal grating layer to achieve coherent optical feedback and guiding of SPP waves as well as a dye polymer medium for the light amplification, is proposed to achieve surface lasing emission. Finite-difference time-domain calculation is performed to design and optimize the lasing performance of the SPP waveguide. It is found that the corresponding laser threshold can be lower than 700 cm-1 and the quality factor can be larger than 700.


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