Multi‐correlation Fourier transform spectroscopy with the resolved modes of a frequency comb laser |
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| Authors: | Mounir Zeitouny Petr Balling Petr Ken Pavel Maika Ronald C. Horsten Stefan T. Persijn H. Paul Urbach Nandini Bhattacharya |
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| Affiliation: | 1. Technische Universiteit Delft, , 2628 CJ Delft, The Netherlands;2. Czech Metrology Institute, Laboratories of Fundamental Metrology, , 150 72 Prague, Czech Republic;3. VSL, , 2629 JA Delft, The Netherlands |
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| Abstract: | An instrument achieving 100 KHz spectral precision using multiple correlation Fourier transform spectroscopy has been demonstrated. The instrument can measure the individual frequency comb modes of 100 MHz frequency comb lasers in air. The experiments show ～400,000 resolved modes at linewidths of 85 MHz in the region of 829 nm and ～ 182,000 resolved modes at linewidths of 28 MHz in the region of 1.5 μm, with a recording time of few minutes. The precision of the instrument, defined by the frequency positioning, attains sub‐MHz even when the scan is performed in air. |
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| Keywords: | Fourier transform spectroscopy frequency comb molecular spectroscopy dispersion |
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