Using an iodine-vapor cell and a single-mode argon-ion laser, we have constructed a spectrometer for low-shifted light scattering, which has resolution better than 0.3 GHz (0.01 cm-1). A method has been proposed to deconvolute the spectra.
R. Megusar, R. S. Katiyar, C. A. Arguello, and F. Bellon, "Iodine spectrometer for low-shifted light scattering," J. Opt. Soc. Am. 65, 22-24 (1975)