Using Photon Echoes for the Femtosecond Magneto-Optical Spectroscopy of Thin Textured Films

Resumo

Periodic modulation of the decay of a stimulated photon echo (SPE), formed in a three-layer textured thin ZnO/Si (P)/Si(B) film with a longitudinal uniform magnetic field upon increasing the time interval between the exciting pulses, is recorded in experiments. The shape of the modulated SPE decay curve changes for different values of time interval between the first two exciting pulses. The g-factor of the quantum transition is estimated from the period of modulation. The value of the g-factor is used to reach a conclusion on the formation of photon echoes on localized complex exciton states of the trion type.