Abstract

Aims: Present study explores two important nonlinear optical (NLO) properties of impurity doped quantum dots (QDs) under the purview of hydrostatic pressure (HP) and temperature.

Method: The NLO properties are the total optical absorption coefficient (TOAC) and the total optical refractive index change (TRIC). Simultaneously, the role of Gaussian white noise on these optical properties has also been minutely examined. A change in HP and temperature affects the above NLO properties reflected through alteration of peak height and peak position.

Objective: Under a given temperature and HP, the magnitude of above NLO properties has been found to be severely depleted in the presence of noise and the extent of depletion prominently depends on the mode through which noise is applied to the system.

Result: The study highlights important interplay between HP, temperature and noise (obviously taking care of its mode of application) that finally governs the profiles of TOAC and TRIC of doped QD systems.

Keywords: Quantum dot, absorption coefficient, refractive index change, hydrostatic pressure, temperature, gaussian white noise.

Graphical Abstract