and nonlinear optical properties in GaAs/Al _ x Ga _ 1-x As GaAs/Al x Ga 1-x As symmetric
double semi-V-shaped quantum well (DSVQWs) have been theoretically studied by using
the compact-density matrix approach and the effective-mass approximation. Our numerical
results show that the optical characteristic of these structures is strongly affected by the
magnetic field, hydrostatic pressure and temperature.