Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Standoff Detection via Single-Beam Spectral Notch Filtered Pulses   We demonstrate single-beam coherent anti-Stokes Raman spectroscopy (CARS),
for detecting and identifying traces of solids, including minute amounts of
explosives, from a standoff distance (>50 m) using intense femtosecond pulses.
Until now, single-beam CARS methods relied on pulse-shapers in order to obtain
vibrational spectra. Here we present a simple and easy-to-implement detection
scheme, using a commercially available notch filter, that does not require the
use of a pulse-shaper.

28
The categories of this paper are: alg-geom
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The categories of this paper are: q-fin
18
The categories of this paper are: econ
26
The categories of this paper are: bayes-an
20
The categories of this paper are: acc-phys
29
The categories of this paper are: funct-an
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The categories of this paper are: stat
22
The categories of this paper are: chao-dyn
35
The categories of this paper are: mtrl-th
1
The categories of this paper are: cs
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The categories of this paper are: hep-ph
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The categories of this paper are: supr-con
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The categories of this paper are: hep-ex
15
The categories of this paper are: nucl-ex
30
The categories of this paper are: q-alg
14
The categories of this paper are: math-ph