Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Mixing second and third-order nonlinear interactions in nanophotonic
  lithium-niobate waveguides   In this paper, we have investigated the interplay between the second and
third-order nonlinearities in lithium-niobate waveguides with strong waveguide
dispersion using uniform and linearly-chirped poling patterns at input powers
in the pico-joule range. We have implemented the accurate unidirectional pulse
propagation model to take into account all the possible nonlinear interactions
inside these structures. In particular, the poling period has been designed to
quasi-phase-match single and multiple sum- and difference-frequency generation
processes. We have shown how the poling period can be used as an additional
degree of freedom to tailor the output spectra of chip-based nonlinear
waveguides in an unprecedented way.

20
The categories of this paper are: acc-phys
29
The categories of this paper are: funct-an
19
The categories of this paper are: eess
14
The categories of this paper are: math-ph
23
The categories of this paper are: solv-int
16
The categories of this paper are: stat
36
The categories of this paper are: cmp-lg
33
The categories of this paper are: plasm-ph
1
The categories of this paper are: cs
34
The categories of this paper are: chem-ph
31
The categories of this paper are: ao-sci
30
The categories of this paper are: q-alg
5
The categories of this paper are: gr-qc
37
The categories of this paper are: supr-con
28
The categories of this paper are: alg-geom
4
The categories of this paper are: cond-mat