High-Performance Dual Raman Spectrometer

The transformation of an old Raman double monochromator into a dual spectrometer capable of working either as the original instrument or as a very high sensitivity scanning single monochromator with multichannel charge-coupled device (CCD) array detection is described. The merits and limitations of this instrument, particularly suited for medium/low resolution (0.3 to 2 cm −1 ) Raman spectroscopy in the gas phase, are discussed. Example spectra of O 2 , N 2 , CO 2 , H 2 O, and CCl 4 are shown.