Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Imaging across the Short-Wave Infra-Red (SWIR) Band via a Flat
  Multilevel Diffractive Lens   We designed and fabricated a flat multi-level diffractive lens (MDL) that is
achromatic in the SWIR band (875nm to 1675nm). The MDL had a focal length of
25mm, aperture diameter of 8.93mm and thickness of only 2.6um. By pairing the
MDL with a SWIR image sensor, we also characterized its imaging performance in
terms of the point-spread functions, modulation-transfer functions, and still
and video imaging.

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The categories of this paper are: bayes-an
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The categories of this paper are: adap-org
23
The categories of this paper are: solv-int
16
The categories of this paper are: stat
11
The categories of this paper are: hep-lat
36
The categories of this paper are: cmp-lg
25
The categories of this paper are: patt-sol
8
The categories of this paper are: hep-ex
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The categories of this paper are: dg-ga
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The categories of this paper are: chao-dyn
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The categories of this paper are: nucl-th
2
The categories of this paper are: math
35
The categories of this paper are: mtrl-th
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The categories of this paper are: eess
15
The categories of this paper are: nucl-ex
18
The categories of this paper are: econ