Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Field Localization and Enhancement of Phase Locked Second and Third
  Harmonic Generation in Absorbing Semiconductor Cavities   We predict and experimentally observe the enhancement by three orders of
magnitude of phase mismatched second and third harmonic generation in a GaAs
cavity at 650nm and 433nm, respectively, well above the absorption edge. Phase
locking between the pump and the harmonics changes the effective dispersion of
the medium and inhibits absorption. Despite hostile conditions the harmonics
become localized inside the cavity leading to relatively large conversion
efficiencies. Field localization plays a pivotal role and ushers in a new class
of semiconductor-based devices in the visible and UV ranges.

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The categories of this paper are: chem-ph
7
The categories of this paper are: hep-th
6
The categories of this paper are: astro-ph
21
The categories of this paper are: adap-org
1
The categories of this paper are: cs
5
The categories of this paper are: gr-qc
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The categories of this paper are: eess
27
The categories of this paper are: comp-gas
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The categories of this paper are: nucl-ex
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The categories of this paper are: patt-sol
11
The categories of this paper are: hep-lat
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The categories of this paper are: q-alg
10
The categories of this paper are: q-bio
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The categories of this paper are: dg-ga
28
The categories of this paper are: alg-geom
2
The categories of this paper are: math