Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Non-trivial scaling of self-phase modulation and three-photon absorption
  in III-V photonic crystal waveguides   We investigate the nonlinear response of photonic crystal waveguides with
suppressed two-photon absorption. A moderate decrease of the group velocity (~
c/6 to c/15, a factor of 2.5) results in a dramatic (30x) enhancement of
three-photon absorption well beyond the expected scaling, proportional to
1/(vg)^3. This non-trivial scaling of the effective nonlinear coefficients
results from pulse compression, which further enhances the optical field beyond
that of purely slow-group velocity interactions. These observations are enabled
in mm-long slow-light photonic crystal waveguides owing to the strong anomalous
group-velocity dispersion and positive chirp. Our numerical physical model
matches measurements remarkably.

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The categories of this paper are: hep-ex
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The categories of this paper are: acc-phys
9
The categories of this paper are: nlin
17
The categories of this paper are: q-fin
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The categories of this paper are: astro-ph
37
The categories of this paper are: supr-con
34
The categories of this paper are: chem-ph
30
The categories of this paper are: q-alg
24
The categories of this paper are: dg-ga
5
The categories of this paper are: gr-qc
11
The categories of this paper are: hep-lat
32
The categories of this paper are: atom-ph
27
The categories of this paper are: comp-gas
15
The categories of this paper are: nucl-ex
31
The categories of this paper are: ao-sci
13
The categories of this paper are: quant-ph