High-resolution quasi-continuous wave inverse Raman spectrometer. Spectrum of CH3D in the CD stretching region

The construction of a spectrometer for high-resolution stimulated Raman spectroscopy is reported and the accuracy of wavenumber determination achievable is discussed. A Doppler-limited spectrum of the C-D stretching band (Q-branch) of the CH 3 D molecule in the 2200 cm −1 region was recorded. Most of the observed transitions have been assigned and some rotational-vibrational constants have been refined