Phonon enemies and absorption processes in carbonyl sulphide crystals

摘要: Abstract The shape of the i.r. absorption bands in one- and two-quantum region crystalline OCS is discussed. energy as a function k density states are calculated using an interaction potential polarizable point dipoles. This offers qualitative explanation origin band shapes. Intrinsic intensity two-phonon with direct excitation mechanism through non linear terms dipole operator. Interaction between overlapping sharp diffuse considered to explane experimental shapes intensities combination tones.