Three-Level Optical Stark Effect of Excitons in GaAs Cylindrical Quantum Wires

Figure 1

The three-level diagram of energy: (a) Under no pump laser, the system contains one hole level () and two electron levels ( and ). The probe laser of photon energy detects the interband transition between the and levels (thin arrow). (b) Under the pump laser of photon energy (thick arrow), level is separated into levels and ; level is separated into levels and . The probe laser of photon energy detects two interband transitions from level to level and from level to level (thin arrows).