Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Traveling Wave Model for Frequency Comb Generation in Single Section
  Quantum Well Diode Lasers   We present a traveling wave model for a semiconductor diode laser based on
quantum wells. The gain model is carefully derived from first principles and
implemented with as few phenomeno- logical constants as possible. The
transverse energies of the quantum well confined electrons are discretized to
automatically capture the effects of spectral and spatial hole burning, gain
asym- metry, and the linewidth enhancement factor. We apply this model to
semiconductor optical amplifiers and single-section phase-locked lasers. We are
able to reproduce the experimental re- sults. The calculated frequency
modulated comb shows potential to be a compact, chip-scale comb source without
additional external components.

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The categories of this paper are: chao-dyn
37
The categories of this paper are: supr-con
1
The categories of this paper are: cs
15
The categories of this paper are: nucl-ex
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The categories of this paper are: eess
12
The categories of this paper are: nucl-th
10
The categories of this paper are: q-bio
29
The categories of this paper are: funct-an
8
The categories of this paper are: hep-ex
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The categories of this paper are: solv-int
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The categories of this paper are: acc-phys
35
The categories of this paper are: mtrl-th
26
The categories of this paper are: bayes-an
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The categories of this paper are: stat
31
The categories of this paper are: ao-sci
2
The categories of this paper are: math