High-Resolution Rotational Fourier-Transform Infrared Spectroscopy
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Date
2022
Publication Type
Other Conference Item
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yes
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Abstract
We demonstrate a rotational optical delay line for Fourier transform infrared (FTIR) spectroscopy with simultaneous high time and frequency resolutions. Thanks to the rotational motion, the trade-off between speed and spectral resolution present in rapid-scan FTIRs is alleviated, and enables the use of high-brightness quantum cascade laser frequency combs as light sources. We demonstrate the capabilities of the delay line by resolving low-pressure methane absorption lines and tracking several absorption lines at video frame rates.
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published
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2022 47th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz)
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Pages / Article No.
9895960
Publisher
IEEE
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47th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz 2022)
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03759 - Faist, Jérôme / Faist, Jérôme