Near-infrared broadband dual-frequency-comb spectroscopy with a resolution beyond the Fourier limit determined by the observation time window

Optics Express
Sho OkuboTakeshi Yasui

Abstract

We performed broadband dual-frequency-comb spectroscopy in the near-infrared region with a much higher resolution than the Fourier limit by using discrete Fourier transforms and spectral interleaving. We observed the resonant spectrum of a Fabry-Perot cavity over a spectral range of 187 to 218 THz using this technique, and measured its free spectral ranges and finesses. The recorded spectrum includes cavity resonance lines with widths of about 2 MHz, which is much narrower than the resolution of 48 MHz determined by the observation time window.

Citations

Nov 10, 2016·Optics Express·Akiko NishiyamaKaoru Minoshima
Dec 17, 2017·Optics Express·Akiko NishiyamaKaoru Minoshima
Mar 17, 2019·Optics Express·Yoshiaki NakajimaKaoru Minoshima
Sep 22, 2017·Nature Communications·Takeo MinamikawaTakeshi Yasui
May 14, 2016·Optics Letters·Nicolas Bourbeau HébertJérôme Genest
Jan 1, 2016·Optica·Ian CoddingtonWilliam Swann

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