A femto-OPO laser fitted to a high-finesse cavity and a Fourier transform spectrometer to perform femto-FT-CEAS (for femto-Fourier transform-cavity enhanced spectroscopy) was used to record high overtones of carbon disulfide with a minimal rms equivalent absorption coefficient of 1.2 × 10 cm Hz per spectral element. New vibrational states are reported for CS and CSS and new or improved rotational constants are obtained, for the v2 = 303, 223, 014 and 403 states in CS and 303 state in SCS.
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De Ghellinck D'Elseghem Vaernewijck, X., Kongolo Tshikala, P., Lepère, M., & Herman, M. (2012). Femto-FT-CEAS applied to carbon disulfide around 1.54 μm. Journal of molecular spectroscopy, 282(1), 27-29. https://doi.org/10.1016/j.jms.2012.10.006