Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Coherent control of light interaction with graphene   We report the experimental observation of all-optical modulation of light in
a graphene film. The graphene film is scanned across a standing wave formed by
two counter-propagating laser beams in a Sagnac interferometer. Through a
coherent absorption process the on-axis transmission is modulated with close to
80% efficiency. Furthermore we observe modulation of the scattered energy by
mapping the off-axis scattered optical signal: scattering is minimized at a
node of the standing wave pattern and maximized at an antinode. The results
highlight the possibility to switch and modulate any given optical interaction
with deeply sub-wavelength films.

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The categories of this paper are: q-alg
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The categories of this paper are: ao-sci
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The categories of this paper are: econ
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The categories of this paper are: acc-phys
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The categories of this paper are: supr-con
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The categories of this paper are: patt-sol
2
The categories of this paper are: math
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The categories of this paper are: nucl-ex
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The categories of this paper are: mtrl-th
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The categories of this paper are: astro-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: stat
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The categories of this paper are: math-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: solv-int
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The categories of this paper are: q-bio