The effect of dual-comb system locking scheme on phase noise and spectral resolution

Yuwei Gao; Tengfei Wu; Lei Zhang

doi:10.1117/12.2590228

18 March 2021 The effect of dual-comb system locking scheme on phase noise and spectral resolution

Yuwei Gao, Tengfei Wu, Lei Zhang

Proceedings Volume 11780, Global Intelligent Industry Conference 2020; 1178019 (2021) https://doi.org/10.1117/12.2590228
Event: Global Intelligent Industry Conference 2020, 2020, Guangzhou, China

Abstract

With the advantages of high resolution, high sensitivity, wide spectral coverage and rapid measurement, the dual-comb spectroscopy technology has developed rapidly in the field of molecular and atomic spectroscopy. This article firstly uses various methods such as balanced optical cross-correlation method and beat frequency with ultra-stable laser to measure the phase noise of the dual optical comb system for different optical comb locking schemes. Then the absorption spectra of C₂H₂ were measured for the dual comb system under different locking schemes. The phase noise obtained under different locking schemes is compared, and the C₂H₂absorption spectrum under each scheme is calculated at the same time, so as to obtain the influence of phase noise on the spectral resolution in the dual-comb spectrum measurement.

Citation Download Citation

Yuwei Gao, Tengfei Wu, and Lei Zhang "The effect of dual-comb system locking scheme on phase noise and spectral resolution", Proc. SPIE 11780, Global Intelligent Industry Conference 2020, 1178019 (18 March 2021); https://doi.org/10.1117/12.2590228

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