Np. Andreeva et al., Detection of the fine structure of the Rayleigh line wing in ice and liquid water using four-photon polarization spectroscopy, OPT SPECTRO, 86(4), 1999, pp. 513-516
The fine structure of the Rayleigh line wing in ice and liquid water is det
ected for the first time using four-photon polarization spectroscopy. The o
bserved resonances can be assigned to coherent librations of the H2O molecu
le in hexagonal cells in solid and liquid phases.