Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Wavevector analysis of plasmon-assisted distributed nonlinear
  photoluminescence along Au nanowire antennas   We report a quantitative analysis of the wavevector diagram emitted by
nonlinear photoluminescence generated by a tightly focused pulsed laser beam
and distributed along Au nanowire via the mediation of surface plasmon
polaritions. The nonlinear photoluminescence is locally excited at key
locations along the nanowire in order to understand the different contributions
constituting the emission pattern measured in a conjugate Fourier plane of the
microscope. Polarization-resolved measurements reveal that the nanowire
preferentially emits nonlinear photoluminescence polarized transverse to the
long axis at close to the detection limit wavevectors with a small azimuthal
spread in comparison to the signal polarized along the long axis. We utilize
finite element method to simulate the observed directional scattering by using
localized incoherent sources placed on the nanowire. Simulation results
faithfully mimic the directional emission of the nonlinear signal emitted by
the different portions of the nanowire.

25
The categories of this paper are: patt-sol
15
The categories of this paper are: nucl-ex
5
The categories of this paper are: gr-qc
13
The categories of this paper are: quant-ph
1
The categories of this paper are: cs
23
The categories of this paper are: solv-int
18
The categories of this paper are: econ
8
The categories of this paper are: hep-ex
30
The categories of this paper are: q-alg
24
The categories of this paper are: dg-ga
2
The categories of this paper are: math
12
The categories of this paper are: nucl-th
14
The categories of this paper are: math-ph
37
The categories of this paper are: supr-con
11
The categories of this paper are: hep-lat
4
The categories of this paper are: cond-mat