Reference-free dual-comb spectroscopy with inbuilt coherence

Mikhail Roiz; Santeri Larnimaa; Touko Uotila; Mikko Närhi; Markku Vainio

doi:10.1364/OL.521866

Reference-free dual-comb spectroscopy with inbuilt coherence

Mikhail Roiz, Santeri Larnimaa, Touko Uotila, Mikko Närhi, Markku Vainio

Physics

Research output: Contribution to journal › Article › Scientific › peer-review

Abstract

We demonstrate a simple system for dual-comb spectroscopy based on two inherently coherent optical frequency combs generated via seeded parametric downconversion. 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.

Original language	English
Pages (from-to)	2473-2476
Number of pages	4
Journal	Optics Letters
Volume	49
Issue number	9
DOIs	https://doi.org/10.1364/OL.521866
Publication status	Published - 30 Apr 2024
Publication type	A1 Journal article-refereed

Publication forum classification

Publication forum level 2

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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10.1364/OL.521866

https://urn.fi/URN:NBN:fi:tuni-202408138075Licence: Unspecified

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Opt. letters DCS paper Draft 3
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Cite this

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abstract = "We demonstrate a simple system for dual-comb spectroscopy based on two inherently coherent optical frequency combs generated via seeded parametric downconversion. 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.",

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AU - Larnimaa, Santeri

AU - Uotila, Touko

AU - Närhi, Mikko

AU - Vainio, Markku

PY - 2024/4/30

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AB - We demonstrate a simple system for dual-comb spectroscopy based on two inherently coherent optical frequency combs generated via seeded parametric downconversion. 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.

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Reference-free dual-comb spectroscopy with inbuilt coherence

Abstract

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