Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Stimulated Brillouin Scattering in layered media: nanoscale enhancement
  of silicon   We report a theoretical study of Stimulated Brillouin Scattering (SBS) in
general anisotropic media, incorporating the effects of both acoustic strain
and local rotation in all calculations. We apply our general theoretical
framework to compute the SBS gain for layered media with periodic length scales
smaller than all optical and acoustic wavelengths, where such composites behave
like homogeneous anisotropic media. We theoretically predict that a layered
medium comprising nanometre-thin layers of silicon and As$_2$S$_3$ glass
possesses a bulk SBS gain of $1.28 \times 10^{-9} \, \mathrm{W}^{-1} \,
\mathrm{m}$. This is more than 500 times larger than the gain coefficient of
silicon, and substantially larger than the gain of As$_2$S$_3$. The enhancement
is due to a combination of roto-optic, photoelastic, and artificial
photoelastic contributions in the composite structure.

22
The categories of this paper are: chao-dyn
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The categories of this paper are: q-fin
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The categories of this paper are: math-ph
34
The categories of this paper are: chem-ph
4
The categories of this paper are: cond-mat
30
The categories of this paper are: q-alg
29
The categories of this paper are: funct-an
9
The categories of this paper are: nlin
27
The categories of this paper are: comp-gas
8
The categories of this paper are: hep-ex
5
The categories of this paper are: gr-qc
11
The categories of this paper are: hep-lat
2
The categories of this paper are: math
28
The categories of this paper are: alg-geom
26
The categories of this paper are: bayes-an
7
The categories of this paper are: hep-th