Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Molecular fingerprint-region spectroscopy from 5-12 \mu m using an
  orientation-patterned gallium phosphide optical parametric oscillator   We report a femtosecond optical parametric oscillator (OPO) based on the new
semiconductor gain material orientation patterned gallium phosphide (OP-GaP),
which enables the production of high-repetition-rate femtosecond pulses
spanning 5-12 \mu m with average powers in the few to tens of milliwatts range.
This is the first example of a broadband OPO operating across the molecular
fingerprint region, and we demonstrate its potential by conducting broadband
Fourier-transform spectroscopy using water vapor and a polystyrene reference
standard.

9
The categories of this paper are: nlin
36
The categories of this paper are: cmp-lg
5
The categories of this paper are: gr-qc
30
The categories of this paper are: q-alg
7
The categories of this paper are: hep-th
32
The categories of this paper are: atom-ph
4
The categories of this paper are: cond-mat
13
The categories of this paper are: quant-ph
37
The categories of this paper are: supr-con
25
The categories of this paper are: patt-sol
34
The categories of this paper are: chem-ph
35
The categories of this paper are: mtrl-th
21
The categories of this paper are: adap-org
17
The categories of this paper are: q-fin
27
The categories of this paper are: comp-gas
6
The categories of this paper are: astro-ph