Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Optimization of femtosecond laser processing in liquids   In this paper we analyze femtosecond laser processing of metals in liquids
searching for optimal conditions for predictable ablation. Incident laser
pulses are stretched or compressed, self-focused and scattered on bubbles and
on surface waves in the liquid environment. Influence of these effects on the
laser intensity distribution on the target surface is discussed and optimal
processing parameters are suggested.

33
The categories of this paper are: plasm-ph
13
The categories of this paper are: quant-ph
2
The categories of this paper are: math
24
The categories of this paper are: dg-ga
25
The categories of this paper are: patt-sol
6
The categories of this paper are: astro-ph
8
The categories of this paper are: hep-ex
23
The categories of this paper are: solv-int
32
The categories of this paper are: atom-ph
12
The categories of this paper are: nucl-th
18
The categories of this paper are: econ
19
The categories of this paper are: eess
0
The categories of this paper are: hep-ph
4
The categories of this paper are: cond-mat
10
The categories of this paper are: q-bio
14
The categories of this paper are: math-ph