Optical heterodyning of the laser radiation backscattered by the near-critical carbon dioxide adsorbed in nanopores

Comparative study of the optical properties of CO2 in the vicinity of the critical point in bulk and nanopore media is carried out using the optical heterodyning, of the backscattered laser radiation. The radiation scattered in aerogel and nanopore glass exhibits a significant decrease in the power and the spectral width in comparison to the radiation scattered in the bulk.