Аннотация:The theoretical and experimental study of acoustic anisotropy effect on the structure of the acoustic field in tellurium dioxide crystal quasi-collinear acousto-optic (AO) cells is fulfilled. The obtained results reveal potential improvements of acousto-optic dispersion delay lines in the laser pulse shaping applications. The optical characteristics such as spectral resolution, AO interaction phase matching frequency, possible optical pulse compression rate of the studied quasi-collinear AO device were also examined and compared with theoretically predicted.