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. Show more
Publication status
publishedExternal links
Book title
2022 47th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz)Pages / Article No.
Publisher
IEEEEvent
Organisational unit
03759 - Faist, Jérôme / Faist, Jérôme
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