Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Proposal for a Self-Excited Electrically Driven Surface Plasmon
  Polariton Generator   We propose a generator of surface plasmon polaritons (SPPs) which, unlike
spasers or plasmon lasers, does not require stimulated emission in the system.
Its principle of operation is based on a positive feedback which a classical
oscillating dipole experiences from a reflective surface located in its near
field. The generator design includes a nanocavity between two metal surfaces
which contains metal nanoparticles in its interior. The whole structure is
placed onto a prism surface that allows one to detect the generated SPPs in the
Kretschmann configuration. The generation process is driven by a moderate
constant voltage applied between the metal covers of the cavity. Both the
generation criterion and the steady-state operation of the generator are
discussed.

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The categories of this paper are: hep-ph
6
The categories of this paper are: astro-ph
14
The categories of this paper are: math-ph
3
The categories of this paper are: physics
37
The categories of this paper are: supr-con
2
The categories of this paper are: math
25
The categories of this paper are: patt-sol
15
The categories of this paper are: nucl-ex
28
The categories of this paper are: alg-geom
17
The categories of this paper are: q-fin
16
The categories of this paper are: stat
1
The categories of this paper are: cs
26
The categories of this paper are: bayes-an
20
The categories of this paper are: acc-phys
13
The categories of this paper are: quant-ph
5
The categories of this paper are: gr-qc