Ai. Bobrysheva et al., OPTICAL EXCITON STARK-EFFECT AND QUANTUM BEATS AT EXCITON QUASI-ENERGY LEVELS IN QUANTUM-WELLS, Physics of the solid state, 39(7), 1997, pp. 1147-1149
The optical Stark effect and quantum beats in a GaAs/AlGaAs quantum we
ll are investigated theoretically for the case when the first two elec
tron size-quantization levels are mixed dynamically by a high-intensit
y CO2 laser pulse polarized perpendicular to the plane of the quantum
well. The quasienergy spectrum of heavy-hole excitons and the ratio be
tween the probabilities of exciton transition with and without a stron
g electromagnetic field are obtained. The time-dependent intensity of
absorption of the sensing light is determined. It exhibits quantum bea
ts at twice the electron Rabi frequency. (C) 1997 American Institute P
hysics.