Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Laser-launched evanescent surface plasmon polariton field utilized as a
  direct coherent pumping source to generate emitted nonlinear four-wave mixing
  radiation   We develop a concept of surface plasmon polaritons (SPPs) based four-wave
mixing (4WM), in which a laser-launched evanescent SPP field is utilized as a
coherent pumping source to involve directly in a nonlinear 4WM process at the
dielectric/metal interface. Conversion efficiency of the resulting 4WM
radiation is expected to be dramatically increased due to the local-field
enhancement effect. Feasibility of implementing this concept at the air/gold
film and graphene flake/gold film interfaces is further examined by numerical
simulations. The concept shows intriguing promise for applications in newly
emerging nanophotonics, optoelectronics, and active plasmonics.

32
The categories of this paper are: atom-ph
14
The categories of this paper are: math-ph
6
The categories of this paper are: astro-ph
10
The categories of this paper are: q-bio
18
The categories of this paper are: econ
11
The categories of this paper are: hep-lat
20
The categories of this paper are: acc-phys
25
The categories of this paper are: patt-sol
26
The categories of this paper are: bayes-an
34
The categories of this paper are: chem-ph
1
The categories of this paper are: cs
29
The categories of this paper are: funct-an
33
The categories of this paper are: plasm-ph
28
The categories of this paper are: alg-geom
2
The categories of this paper are: math
15
The categories of this paper are: nucl-ex