Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Circular symmetric Airy beam with the inverse propagation of the
  abruptly autofocusing Airy beam   In this letter, we introduce a new class of light beam, the circular
symmetric Airy beam (CSAB), which arises from the extensions of the one
dimensional (1D) spectrum of Airy beam from rectangular coordinates to
cylindrical ones. The CSAB propagates at initial stages with a single central
lobe that autofocuses and then defocuses into the multi-rings structure. Then,
these multi-rings perform the outward accelerations during the propagation.
That means the CSAB has the inverse propagation of the abruptly autofocusing
Airy beam. Besides, the propagation features of the circular symmetric Airy
vortex beam (CSAVB) also have been investigated in detail. Our results offer a
complementary tool with respect to the abruptly autofocusing Airy beam for
practical applications.

5
The categories of this paper are: gr-qc
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The categories of this paper are: quant-ph
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The categories of this paper are: comp-gas
10
The categories of this paper are: q-bio
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The categories of this paper are: chem-ph
26
The categories of this paper are: bayes-an
30
The categories of this paper are: q-alg
31
The categories of this paper are: ao-sci
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The categories of this paper are: astro-ph
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The categories of this paper are: stat
1
The categories of this paper are: cs
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The categories of this paper are: nucl-ex
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The categories of this paper are: econ
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The categories of this paper are: hep-ex
2
The categories of this paper are: math
33
The categories of this paper are: plasm-ph