Dual electro-optic frequency comb spectroscopy using pseudo-random modulation

Khaoula Fdil

doi:10.1364/OL.44.004415

2019-08-29

Khaoula Fdil *

Vincent Michaud-Belleau

Hebert, Nicolas Bourbeau

Philippe Guay

Adam J. Fleisher

Jean-Daniel Deschênes

Jérôme Genest

DOI：10.1364/OL.44.004415

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摘要

En 中文

An approach for dual-comb spectroscopy using electrooptic (EO) phase modulation is reported. Maximum-length pseudo-random binary sequences allow for energy-efficient and flexible comb generation. Self-correction of interferograms is shown to remove relative comb drifts and improve mutual coherence, even for EO combs derived from the same laser source. Methane spectroscopy is reported over a similar to 10 GHz spectral range, limited by the modulators' bandwidth. The potential of a simple EO comb instrument is demonstrated to rapidly quantify atmospheric methane emissions with ppb precision over 1 km. (C) 2019 Optical Society of America

Keyword:

INTERFERENCE SPECTROSCOPY

GREENHOUSE GASES

期刊

Optics Letters

IF:

3.3

论文数:

4.0W

被引数:

7.6W

机构

laval university

学者数:

2.5W

论文数: 2.2W

被引数: 96

national institute of standards & technology (nist) - usa

学者数:

9.7K

论文数: 9.0K

被引数: 4

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