Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Velocity-locked solitary waves in quadratic media   We demonstrate experimentally the existence of three-wave resonant
interaction solitary triplets in quadratic media. Stable velocity-locked
bright-dark-bright spatial solitary triplets, determined by the balance between
the energy exchange rates and the velocity mismatch between the interacting
waves, are excited in a KTP crystal.

36
The categories of this paper are: cmp-lg
6
The categories of this paper are: astro-ph
7
The categories of this paper are: hep-th
17
The categories of this paper are: q-fin
12
The categories of this paper are: nucl-th
18
The categories of this paper are: econ
11
The categories of this paper are: hep-lat
4
The categories of this paper are: cond-mat
5
The categories of this paper are: gr-qc
21
The categories of this paper are: adap-org
37
The categories of this paper are: supr-con
35
The categories of this paper are: mtrl-th
19
The categories of this paper are: eess
0
The categories of this paper are: hep-ph
24
The categories of this paper are: dg-ga
26
The categories of this paper are: bayes-an