Figure 7

Variation of the peak value of the exciton-related nonlinear optical absorption in a cylindrical QD. The variation is a function of the aluminum concentration in the left-hand potential barrier (${\mathit{x}}_{\text{Al}}^1$). The results are for$x_{\text{Al}}^2=0.33$, L = 15 nm, and R = 10 nm. (a, b) Several values of the hydrostatic pressure with different setups of the applied electric field for α₀=3L/4 = 11.3 nm: (a) F = 0 kV/cm and (b) F = 20 kV/cm, have been considered. (c) The results are for two values of the applied electric field with P = 0 and α₀ = 0.