Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Laminar-Turbulent Transition in Raman Fiber Lasers: A First Passage
  Statistics Based Analysis   Loss of coherence with increasing excitation amplitudes and spatial size
modulation is a fundamental problem in designing Raman fiber lasers. While it
is known that ramping up laser pump power increases the amplitude of stochastic
excitations, such higher energy inputs can also lead to a transition from a
linearly stable coherent laminar regime to a non-desirable disordered turbulent
state. This report presents a new statistical methodology, based on first
passage statistics, that classifies lasing regimes in Raman fiber lasers,
thereby leading to a fast and highly accurate identification of a strong
instability leading to a laminar-turbulent phase transition through a
self-consistently defined order parameter. The results have been consistent
across a wide range of pump power values, heralding a breakthrough in the
non-invasive analysis of fiber laser dynamics.

5
The categories of this paper are: gr-qc
1
The categories of this paper are: cs
7
The categories of this paper are: hep-th
34
The categories of this paper are: chem-ph
13
The categories of this paper are: quant-ph
18
The categories of this paper are: econ
29
The categories of this paper are: funct-an
33
The categories of this paper are: plasm-ph
37
The categories of this paper are: supr-con
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The categories of this paper are: astro-ph
20
The categories of this paper are: acc-phys
30
The categories of this paper are: q-alg
23
The categories of this paper are: solv-int
32
The categories of this paper are: atom-ph
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The categories of this paper are: hep-ex
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The categories of this paper are: nlin