Electromagnetic analysis of a silver nanotube laser with two active regions

Considered is the two-dimensional (2-D) source-free problem of the H-polarized electromagnetic field in the presence of a silver circular nanotube coated with a concentric layer of active material and with a core of similar active material. We assume that the natural-mode frequency is real-valued an...

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Bibliographic Details
Main Author: Natarov, Denys M.
Format: Conference Proceeding
Language:English
Subjects:
Eigenvalues and eigenfunctions
laser
Laser modes
Mathematical model
nanotube
plasmon
Plasmons
resonator
Silver
Surface emitting lasers
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Summary:Considered is the two-dimensional (2-D) source-free problem of the H-polarized electromagnetic field in the presence of a silver circular nanotube coated with a concentric layer of active material and with a core of similar active material. We assume that the natural-mode frequency is real-valued and look for it together with the threshold value of material gain in the active regions. As a method, we use the separation of variables and examine numerically the characteristic equations for different azimuthal indices. We demonstrate that the considered nanotube laser can emit light on a number of modes of different nature including the hybrid surface plasmon (SP) modes, like nanowire laser considered in our previous works.
ISSN:2160-1534
DOI:10.1109/CAOL.2016.7851448