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Fourier transform spectroscopy in the vibrational fingerprint region with a birefringent interferometer

Réhault, J; Borrego-Varillas, R; Oriana, A; Manzoni, C; Hauri, C P; Helbing, Jan; Cerullo, G (2017). Fourier transform spectroscopy in the vibrational fingerprint region with a birefringent interferometer. Optics Express, 25(4):4403.

Abstract

We introduce a birefringent interferometer for Fourier transform (FT) spectroscopy in the mid-infrared, covering the vibrational fingerprint region (5-10 µm, 1000-2000 cm−1), which is crucial for molecular identification. Our interferometer employs the crystal calomel (Hg2Cl2), which combines high birefringence (ne-no≈0.55) with a broad transparency range (0.38-20 µm). We adopt a design based on birefringent wedges, which is simple and compact and guarantees excellent delay accuracy and long-term stability. We demonstrate FTIR spectroscopy, with a frequency resolution of 3 cm−1, as well as two-dimensional IR (2DIR) spectroscopy. Our setup can be extended to other spectroscopic modalities such as vibrational circular dichroism and step-scan FT spectroscopy.

Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Department of Chemistry
Dewey Decimal Classification:540 Chemistry
Scopus Subject Areas:Physical Sciences > Atomic and Molecular Physics, and Optics
Language:English
Date:20 February 2017
Deposited On:21 Nov 2018 16:09
Last Modified:20 Oct 2024 01:34
Publisher:Optical Society of America
ISSN:1094-4087
OA Status:Gold
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1364/oe.25.004403
Official URL:https://www.osapublishing.org/abstract.cfm?URI=oe-25-4-4403
Project Information:
  • Funder: H2020
  • Grant ID: 665635
  • Project Title: MISSION - Mid Infrared SpectrometerS by an Innovative Optical iNterferometer
  • Funder: FP7
  • Grant ID: 291198
  • Project Title: STRATUS - Structure and dynamics of biomolecules by two-dimensional ultraviolet spectroscopy
  • Funder: H2020
  • Grant ID: 654148
  • Project Title: LASERLAB-EUROPE - The Integrated Initiative of European Laser Research Infrastructures
  • Funder: FP7
  • Grant ID: 328110
  • Project Title: UPDUS - Understanding photoprotection mechanisms in DNA by two-dimensional UV spectroscopy
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