The fundamental vibrational band of oxygen has been examined with a resolution of 0.05 cm-1 for the Q branch and 0.40 cm-l for the S and 0 branches. All lines of the Q branch were clearly resolved except Q(1) and Q(3). Calculated molecular parameters agree with those previously reported from microwave and electronic spectra. Line width measurements made in the Q branch and on three ,S branch lines, using a resolution of 0.05 cm-l, are in fair agreement with previously measured and calculated line widths for pure rotational Raman lines.

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Tbe design and performance of a computer controlled high resolution scponing Raman spectrometer system is described. Resolution of 0.05 an-' has been achieved with vibration-rotation bands with single mode laser operation. Pure rotation lines have been observed with 0.04 cm-' slit widths.

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