PHOTON ECHO AND ITS SOME MODIFICATIONS IN MOLECULAR GASES

The aim is to develop the high resolution coherent spectroscopy of the molecular gases and also to apply the photon echo (PE) and its modifications - stimulated photon echo (SPE) and photon echo in the standing waves (PEWS) - for investigation of the different aspects in the collisional relaxation of the molecules. The universal methods for experimental investigation of PE and its modification in the molecular gases in the wide range of the excitating radiation parameters and coherent responses have been developed. The field broadening-free method of the Doppler-free spectroscopy providing the significant advantage in the signal/noise relation in comparison of the saturated absorption spectroscopy has been developed and approved experimentally on the PESW phenomenon. The relaxation of the induced dipole moment and level populations, depolarizing collisions, elastic collisions with change of the velocity in the molecular gases have been investigated by the PE methods and its modifications. A possibility to indicate the slow molecules by the photon echo methods and its modifications has been shown.Available from VNTIC / VNTIC - Scientific & Technical Information Centre of RussiaSIGLERURussian Federatio