Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Ultrafast laser writing quill effect in low loss waveguide fabrication
  regime   Quill effect, one of the intriguing phenomena in ultrafast laser writing, to
our knowledge, has not been studied in low-loss-waveguide (LLW) writing regime
yet, probably due to its invisibility under conventional white-light microscope
in that regime. In this report, with help of adaptive third harmonic generation
microscopy we reveal the quill effect in LLW writing regime and study its
influences on the properties of written photonic integrated components in term
of polarization-related properties in fused silica and beam-splitting ratio of
three-waveguide-coupler in borosilicate glass.

24
The categories of this paper are: dg-ga
36
The categories of this paper are: cmp-lg
8
The categories of this paper are: hep-ex
28
The categories of this paper are: alg-geom
4
The categories of this paper are: cond-mat
26
The categories of this paper are: bayes-an
10
The categories of this paper are: q-bio
5
The categories of this paper are: gr-qc
2
The categories of this paper are: math
31
The categories of this paper are: ao-sci
22
The categories of this paper are: chao-dyn
17
The categories of this paper are: q-fin
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The categories of this paper are: acc-phys
18
The categories of this paper are: econ
0
The categories of this paper are: hep-ph
23
The categories of this paper are: solv-int