Oscillator strength of impurity doped quantum dots: Influence of Gaussian white noise

Noise-Modulated Effects of Anisotropy and Position Dependent Effective Mass on the Oscillator Strength of Impurity Doped Quantum Dots

“…where β is a constant chosen to be 0.01 a.u. V noise stands for white noise [f(x,y)] which follows a Gaussian distribution (generated by Box-Muller algorithm), has a strength ζ and is characterized by zero-average and spatial δ-correlation conditions [65][66][67]. Such white noise can be introduced to the system via two different modes (pathways) i.e.…”

“…Such white noise can be introduced to the system via two different modes (pathways) i.e. additive and multiplicative [65][66][67]. These two different modes can be discriminated on the basis of extent of system-noise interaction.…”

“…Presence of noise invariably affects the NLO properties of mesoscopic devices. Motivated by this fact recently we have made thorough investigations on how Gaussian white noise affects the oscillator strength of doped QD [65]. We have also explored the role played by geometrical anisotropy [66] and PDEM [67,68] on various NLO properties of doped QD in presence of noise.…”

“…imp is represented by a Gaussian function[65] i.e. of dopant incorporation, strength of the dopant potential, and the spatial spread of impurity potential, respectively.…”

Hydrogenic donor impurities in $\delta$ -doped cylindrical quantum dots under intense laser field

“…The obtained results show that the amplitude of photoioniz ation cross-section grows as the dot radius increases and the peak of the cross-section blue shifts with the laser intensity increment. Finally, the effect of noise on the electronic and optical properties of QDs has been studied theoretically by many researchers [40][41][42]. Although there are numerous studies on this subject, as far as we know, there are no theor etical studies on the ILF dependency of the bound energy levels and impurity binding energy in a cylindrical QD with δ-doped axial potential.…”