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High-resolution broad-bandwidth Fourier-transform absorption spectroscopy in the VUV range down to 40 nm

Abstract : Vacuum-ultraviolet (VUV) high-resolution absorption spectroscopy is a unique tool for the study of gas-phase atomic and molecular electronic structure. To date, it has been performed by using lasers or synchrotron radiation-based grating spectrometers, but none of these techniques can offer simultaneous high resolution, wavelength accuracy and broad tunability. The only technique combining these three important features is Fourier-transform spectroscopy, but this is limited to the mid-UV range (down to 140 nm; ref. 1) because of a lack of beamsplitters. Here, we present a new instrument based on a wavefront-division scanning interferometer, applied for the first time to the VUV range. This instrument, coupled to the DESIRS beamline at synchrotron SOLEIL, covers a broad range of wavelengths (typically 7%, adjustable in the 250–40 nm range), a resolving power of ~1 × 106, an extrinsic absolute wavelength accuracy of 1 × 10−7 and a high signal-to-noise ratio.
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https://hal-iogs.archives-ouvertes.fr/hal-00575770
Contributor : Sébastien de Rossi <>
Submitted on : Friday, March 11, 2011 - 9:49:59 AM
Last modification on : Wednesday, September 16, 2020 - 5:42:31 PM

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  • HAL Id : hal-00575770, version 1

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Nelson de Oliveira, Mourad Roudjane, Denis Joyeux, Daniel Phalippou, Jean-Claude Rodier, et al.. High-resolution broad-bandwidth Fourier-transform absorption spectroscopy in the VUV range down to 40 nm. Nature Photonics, Nature Publishing Group, 2011, 5, pp.149-153. ⟨hal-00575770⟩

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