Lock-in-detection dual-comb spectroscopy
Optics
2019-08-06 v1 Applied Physics
Abstract
Dual-comb spectroscopy (DCS) is useful for gas spectroscopy due to high potential of optical frequency comb (OFC). However, fast Fourier transform (FFT) calculation of a huge amount of temporal data spends significantly longer time than the acquisition time of an interferogram. In this article, we demonstrate frequency-domain DCS by a combination of DCS with lock-in detection, namely LID-DCS. LID-DCS directly extracts an arbitrary OFC mode from a vast number of OFC modes without the need for FFT calculation. Usefulness of LID-DCS is demonstrated in rapid monitoring of transient signal change and spectroscopy of hydrogen cyanide gas.
Cite
@article{arxiv.1904.03415,
title = {Lock-in-detection dual-comb spectroscopy},
author = {Hidenori Koresawa and Kyuki Shibuya and Takeo Minamikawa and Akifumi Asahara and Ryo Oe and Takahiko Mizuno and Masatomo Yamagiwa and Yasuhiro Mizutani and Tetsuo Iwata and Hirotsugu Yamamoto and Kaoru Minoshima and Takeshi Yasui},
journal= {arXiv preprint arXiv:1904.03415},
year = {2019}
}
Comments
28 Pages, 4 figures