FOURIER-TRANSFORM COMPLEX REFRACTIVE INDEX SPECTROSCOPY AT Hz-LEVEL WITH OPTICAL FREQUENCY COMBS Article Swipe

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Refractive index Fourier transform spectroscopy Spectroscopy Fourier transform Fourier transform infrared spectroscopy Optics Materials science Index (typography) Physics Computer science Quantum mechanics World Wide Web

Dominik Charczun , Grzegorz Soboń , Dorota Tomaszewska , P. Huke , Michael Debus , Piotr Masłowski , R. S. Trawiński , Daniel Lisak , Agata Cygan , Akiko Nishiyama , Grzegorz Kowzan ·

YOU? · · 2018 · Open Access · · DOI: https://doi.org/10.15278/isms.2018.tg09 · OA: W2901416266

Here we present a new mid-infrared frequency comb system for rapid spectral acquisition using a virtually imaged phased array (VIPA) spectrometer.\\footnote{L. Nugent-Glandorf et al., \\textit{Opt. Lett.} \\textbf{37,} 3285 (2012)} A difference-frequency generation comb, tuneable from 4.4 $\\mu$m to 4.7 $\\mu$m, was used to interrogate a single-pass absorption cell containing either N$_2$O or CO dilute in either N$_2$ or air. Precision molecular spectroscopy capabilities at timescales of less than 1 ms will be presented, and progress toward cavity-enhanced and time-resolved comb spectroscopies\\footnote{A.J. Fleisher et. al., \\textit{J. Phys. Chem. Lett.} \\textbf{5,} 2241 (2014)} will be discussed.