Lasing of nanoemitters with nanorings having Drude dispersion

Abstract

We systematically study the dynamics and laser emission of randomly distributed nanoemitters (NEs) integrated into two-dimensional (2D) array of metal nanorings (NR) enhanced by the plasmon-polariton (PP) excitations. It is shown that the transition time to the laser generation regime (instability) of NE optical fields significantly depends on the plasma frequency ωp of the NR. The PP fields is excited macroscopically in the whole system if ωp of NR exceeds a certain critical transition value ωp > ωc. The latter leads to a strong coupling of the NE emission with the PP fields and a critical increase of the total current in the NR array. We found the analytical dependence of the critical current amplitude I = I(ωp/ωc) as function of NR plasma frequency, which is in a good agreement with the numerical simulations.

Keywords

• Nanoemitters
• nanorings
• laser emission
• plasmon-polariton