Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Focusing polychromatic light through strongly scattering media   We demonstrate feedback-optimized focusing of spatially coherent
polychromatic light after transmission through strongly scattering media, and
describe the relationship between optimized focus intensity and initial
far-field speckle contrast. Optimization is performed using a MEMS spatial
light modulator with camera-based or spectrometer-based feedback. We observe
that the spectral bandwidth of the optimized focus depends on characteristics
of the feedback signal. We interpret this dependence as a modification in the
number of spectral modes transmitted by the sample, and introduce a simple
model for polychromatic focus enhancement that is corroborated by experiment
with calibrated samples.

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The categories of this paper are: math
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The categories of this paper are: solv-int
17
The categories of this paper are: q-fin
1
The categories of this paper are: cs
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The categories of this paper are: astro-ph
20
The categories of this paper are: acc-phys
31
The categories of this paper are: ao-sci
22
The categories of this paper are: chao-dyn
15
The categories of this paper are: nucl-ex
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The categories of this paper are: cmp-lg
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The categories of this paper are: dg-ga
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The categories of this paper are: gr-qc
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The categories of this paper are: adap-org
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The categories of this paper are: hep-ex
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The categories of this paper are: cond-mat
30
The categories of this paper are: q-alg