Collision-induced stimulated photon echo in magnetic field

摘要

The action of the longitudinal magnetic field on the collision-induced stimulated photon echo formed on the transition with the angular momentum change J(a) = 0 --> J(b) = 1 is studied theoretically. It is shown that this action depends essentially on the sign of the difference in the orientation Gamma((1))(b) and alignment Gamma((2))(b) relaxation rates of the excited level b. If Gamma((2))(b) > Gamma((1))(b) then the echo intensity in a weak magnetic field increases with the increase in the magnetic field strength, while in the alternative case Gamma((2))(b) < Gamma((1))(b) it decreases up to zero value. The formulae enabling the determination of the magnitude of the difference Gamma((1))(b) - Gamma((2))(b) from the experimental study of the oscillations of the echo intensity with the increase in the magnetic field strength are obtained.