Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Protecting the Edge: Ultrafast Laser Modified C-shaped Glass Edges   A procedure and optical concept is introduced for ultrashort pulsed laser
cleaving of transparent materials with tailored edges in a single pass. The
procedure is based on holographically splitting a number of foci along the
desired edge geometry including C-shaped edges with local 45{\deg} tangential
angles to the surface. Single-pass, full thickness laser modifications are
achieved requiring single-side access to the workpiece only without inclining
the optical head. After having induced laser modifications with feed rates of 1
m/s actual separation is performed using a selective etching strategy.

17
The categories of this paper are: q-fin
15
The categories of this paper are: nucl-ex
22
The categories of this paper are: chao-dyn
32
The categories of this paper are: atom-ph
16
The categories of this paper are: stat
8
The categories of this paper are: hep-ex
11
The categories of this paper are: hep-lat
1
The categories of this paper are: cs
7
The categories of this paper are: hep-th
5
The categories of this paper are: gr-qc
13
The categories of this paper are: quant-ph
37
The categories of this paper are: supr-con
12
The categories of this paper are: nucl-th
29
The categories of this paper are: funct-an
35
The categories of this paper are: mtrl-th
2
The categories of this paper are: math