Correcting spectral baseline fluctuations in dual-comb interferometry
Autor: | Khaoula Fdil, Alex Tourigny-Plante, Mathieu Walsh, Jérôme Genest, Philippe Guay |
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Rok vydání: | 2022 |
Předmět: | |
Zdroj: | Optics Letters. 47:206 |
ISSN: | 1539-4794 0146-9592 |
Popis: | A method to measure and correct for spectral baseline fluctuations in dual-comb interferometry is presented. Fluctuations can be measured from the amplitude of beat notes between combs and a continuous wave laser or from a separate measurement of the combs’ repetition rates, filtered around the spectral region of interest. Amplitude-dependent spectral variations are characterized using low-resolution Fourier transforms around the centerburst of several interferograms, and a nonstationary filter is applied to properly account for the combs’ variations during the measurement. This allows removal of this source of statistical, as well as systematic, errors. |
Databáze: | OpenAIRE |
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