Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: SiPM used as fast Photon-Counting Module and for Multiphoton Detection   We demonstrate fast counting and multiphoton detection abilities of a Silicon
Photo Multiplier (SiPM). In fast counting mode we are able to detect two
consecutive photons separated by only 2.3 ns corresponding to 430 MHz. The
counting efficiency for small optical intensities at a wavelength of 532 nm was
found to be around 8.3% with a dark count rate of 50 kHz at T=-7 degrees
Celsius. Using the SiPM in multiphoton detection mode, we find a good signal
discrimination for different numbers of simultaneous detected photons.

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The categories of this paper are: q-alg
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The categories of this paper are: atom-ph
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The categories of this paper are: math
5
The categories of this paper are: gr-qc
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The categories of this paper are: supr-con
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The categories of this paper are: math-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: solv-int
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The categories of this paper are: chem-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: mtrl-th
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The categories of this paper are: patt-sol
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The categories of this paper are: cond-mat
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The categories of this paper are: chao-dyn
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The categories of this paper are: cs
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The categories of this paper are: stat