Fourier-transform spectroscopy based on the rotational Doppler effect

S. Larnimaa; M. Vainio

doi:10.1063/5.0220119

Fourier-transform spectroscopy based on the rotational Doppler effect

S. Larnimaa^*
, M. Vainio

^*Corresponding author for this work

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

5 Citations (Scopus)

18 Downloads (Pure)

Abstract

We propose a new Fourier-transform spectroscopy technique based on the rotational Doppler effect. The technique offers an application for optical vortex frequency combs, where each frequency component carries a unique amount of orbital angular momentum (OAM). Here, we emulate a vortex comb using a tunable single frequency laser and a collection of spiral phase plates, generating up to 11 distinct OAM modes. Unlike in traditional Fourier-transform spectroscopy based on the Michelson interferometer (linear Doppler effect), the spectral resolution of vortex-comb spectroscopy is not limited by the mechanical scan distance of the instrument, but the instrument can be operated continuously without interruptions, leading to fast mode-resolved measurements.

Original language	English
Article number	105329
Journal	AIP Advances
Volume	14
Issue number	10
DOIs	https://doi.org/10.1063/5.0220119
Publication status	Published - Oct 2024
Publication type	A1 Journal article-refereed

Funding

We thank Dr. Markus Mets\u00E4l\u00E4, Dr. Juho Karhu, and Dr. Mikhail Roiz for feedback on the project. S. Larnimaa acknowledges financial support from the CHEMS doctoral program of the University of Helsinki. Open access funded by Helsinki University Library.

Funders
Helsingin yliopisto
Helsinki University Library

Publication forum classification

Publication forum level 1

ASJC Scopus subject areas

General Physics and Astronomy

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10.1063/5.0220119Licence: CC BY

105329_1_5.0220119Final published version, 4.18 MBLicence: CC BY

https://urn.fi/URN:NBN:fi:tuni-202501091247Licence: CC BY

Cite this

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Fourier-transform spectroscopy based on the rotational Doppler effect

Abstract

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