Vibrational Stark Spectroscopy on Fluorobenzene with Quantum Cascade Laser Dual Frequency Combs
Abstract
We demonstrate the performance of a dual frequency comb 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 (FTIR) instrument in terms of spectral response, parameter estimation, and signal-to-noise ratio. The dual-comb spectrometer provided similar qualitative and quantitative data as the FTIR 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 FTIR 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 (SNR) 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.
Keywords
Cite
@article{arxiv.1905.05758,
title = {Vibrational Stark Spectroscopy on Fluorobenzene with Quantum Cascade Laser Dual Frequency Combs},
author = {Urszula Szczepaniak and Samuel H. Schneider and Raphael Horvath and Jacek Kozuch and Markus Geiser},
journal= {arXiv preprint arXiv:1905.05758},
year = {2019}
}
Comments
21 pages, including Supp. Inf., 8 figures (including supp.)