In:
Applied Spectroscopy, SAGE Publications, Vol. 74, No. 3 ( 2020-03), p. 347-356
Abstract:
We demonstrate the performance of a dual frequency comb quantum cascade laser (QCL) spectrometer for the application of vibrational Stark spectroscopy. Measurements performed on fluorobenzene with the dual-comb spectrometer (DCS) were compared to results obtained using a conventional Fourier transform infrared (FT-IR) instrument in terms of spectral response, parameter estimation, and signal-to-noise ratio (S/N). The dual-comb spectrometer provided similar qualitative and quantitative data as the FT-IR setup in 250 times shorter acquisition time. For fluorobenzene, the DCS measurement resulted in a more precise estimation of the fluorobenzene Stark tuning rate ((0.81 ± 0.09) cm −1 /(MV/cm)) than with the FT-IR system ((0.89 ± 0.15) cm −1 /(MV/cm)). Both values are in accordance with the previously reported value of 0.84 cm −1 /(MV/cm). We also point to an improvement of signal-to-noise ratio in the DCS configuration. Additional characteristics of the dual-comb spectrometer applicable to vibrational Stark spectroscopy and their scaling properties for future applications are discussed.
Type of Medium:
Online Resource
ISSN:
0003-7028
,
1943-3530
DOI:
10.1177/0003702819888503
Language:
English
Publisher:
SAGE Publications
Publication Date:
2020
detail.hit.zdb_id:
1474251-2
SSG:
11
