Collision-induced stimulated photon echo at the transition 0-1

摘要

The stimulated photon echo formed by the sequence of three laser excitationpulses in gaseous medium on the transition with the angular momentum change 0-1is considered with an account of elastic depolarizing collisions. Thepolarization properties of this echo may be potentially interesting for thepurposes of data processing. It is shown, that with the polarization of thefirst pulse orthogonal to that of the second and third pulses the appearance ofthe echo signal will be entirely determined by the action of collisions. Theexistence of this echo is determined by the difference in the alignment and theorientation relaxation rates of the excited level.