Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: High resolution mid-infrared optical coherence tomography with kHz line
  rate   We report on Mid-infrared (MIR) OCT at 4 $\mu$m based on collinear
sum-frequency upconversion and promote the A-scan scan rate to 3 kHz. We
demonstrate the increased imaging speed for two spectral realizations, one
providing an axial resolution of 8.6 $\mu$m, and one providing a record axial
resolution of 5.8 $\mu$m. Image performance is evaluated by sub-surface
micro-mapping of a plastic glove and real-time monitoring of CO$_2$ in parallel
with OCT imaging.

16
The categories of this paper are: stat
15
The categories of this paper are: nucl-ex
13
The categories of this paper are: quant-ph
20
The categories of this paper are: acc-phys
26
The categories of this paper are: bayes-an
6
The categories of this paper are: astro-ph
34
The categories of this paper are: chem-ph
1
The categories of this paper are: cs
21
The categories of this paper are: adap-org
4
The categories of this paper are: cond-mat
35
The categories of this paper are: mtrl-th
19
The categories of this paper are: eess
37
The categories of this paper are: supr-con
29
The categories of this paper are: funct-an
10
The categories of this paper are: q-bio
17
The categories of this paper are: q-fin