Hollow-Core-Fibre-Delivered Attenuated Total Internal Reflection Heterodyne Spectroscopy

Pablo Castro-Marin, Kerr Johnson, Carl Farrell, Ian A. Davidson, Gregory T. Jasion, Natalie V. Wheeler, Francesco Poletti, David J. Richardson, Derryck T. Reid

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Attenuated total internal reflection Fourier-transform infrared (ATR-FTIR) spectroscopy is a commonly used modality for measuring the spectra of highly absorbing liquids and solids. Previously, we combined broadband OPO-based mid-IR spectroscopy [1] with the use of a non-resonant hollow-core fibre (HCF) [2] to demonstrate heterodyne detection in a way that achieved common mode rejection of absorption features unique to the fibre transmission path [3]. We now extend this approach to enable simple, fibre-delivered ATR spectroscopy.
Original languageEnglish
Title of host publication2023 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)
PublisherIEEE
ISBN (Electronic)9798350345995
DOIs
Publication statusPublished - 4 Sept 2023

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