“…Zhang et al [21] for a cylinder GaN/AIN QD, Chen et al [22] for an asymmetric double triangular quantum wells, Yuan et al [24] for a disc-like QD, S -ahin [26] for a spherical QD calculated the optical absorption coefficients and refractive index changes using different calculation methods. Karimi and Rezaei [28], Zhang et al [32], Niculescu [33] and Burileanu and Radu [34] studied the optical absorption coefficients and refractive index changes under applied electric and magnetic fields for a semi-parabolic and spherical QD. Recently, Kırak et al [35] and Mora-Ramos et al [37] investigated the linear and nonlinear optical properties under an applied electric field for a QD.…”