Reference-free dual-comb spectroscopy with inbuilt coherence
Optics
2024-08-13 v2
Abstract
We demonstrate a simple system for dual-comb spectroscopy based on two inherently coherent optical frequency combs generated via seeded parametric down-conversion. The inbuilt coherence is established by making the two combs share a common comb line. We show that the inbuilt coherence makes it possible to use a simple numerical post-processing procedure to compensate for small drifts of the dual-comb interferogram arrival-time and phase. This enables long-time coherent averaging of the interferograms.
Keywords
Cite
@article{arxiv.2405.03182,
title = {Reference-free dual-comb spectroscopy with inbuilt coherence},
author = {Mikhail Roiz and Santeri Larnimaa and Touko Uotila and Mikko Narhi and Markku Vainio},
journal= {arXiv preprint arXiv:2405.03182},
year = {2024}
}