General properties of confined hydrogenic impurities in spherical quantum dots

Refractive index changes and absorption coefficients in a spherical quantum dot with parabolic potential

“…QDs have the atomic properties such as discrete energy levels and shell structures and they are often referred to as artificial atoms [1,2]. Therefore, a great deal of works has been performed on the electronic structure of QDs with one-and twoelectrons by using several calculation methods [1][2][3][4][5][6][7][8][9][10][11].…”

Analysis of the effect of polarization traps and shallow impurities on the interlevel light absorption of quantum dots

“…There are many theoretical works which are devoted to the study of shallow donor and acceptor impurity states, in nanosystems of different shapes [7][8][9][10][11][12][13][14][15]. It was proved that by decreasing the QD radius to the value less than the corresponding effective Bohr radius, the probability of electron residence outside QD is larger than in the QD.…”

Threshold pump intensity effect on the refractive index changes in InGaN SQD: Internal constitution and size effects

“…Large electric dipole matrix elements along with small energy differences between subbands, enhance the nonlinear contribution of dielectric constant, so one expects the light intensity plays a crucial role in the optical properties of the dots. In this regard the dot sizes and the composition of the ternary alloy can alter the values of electronic eigen-energies and their corresponding envelope functions [1][2][3][4][5][6][7]. The third-order nonlinear optical properties of typical structures have attracted much attention for both theoretically researches and practically applications such as infrared photo detectors, farinfrared laser amplifiers, optical memory technology, light emitting diode, high-speed electro-optical modulators and so on [8][9][10][11][12][13][14][15][16][17][18][19].…”