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Conferences > CLEO_Europe > 2023 > ch_10 > ch_10_4
  • Conference on Lasers and Electro-Optics/Europe (CLEO/Europe 2023) and European Quantum Electronics Conference (EQEC 2023)
  • Technical Digest Series (Optica Publishing Group, 2023),
  • paper ch_10_4

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, and Derryck T. Reid

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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.

© 2023 IEEE

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