Regular Article

Exploring quadrupole oscillator strength of impurity doped quantum dots controlled by Gaussian white noise

Department of Chemistry, Physical Chemistry Section, Visva Bharati University, Santiniketan, Birbhum 731 235, West Bengal, India

^a e-mail: pcmg77@rediffmail.com

Received: 31 July 2020
Accepted: 5 October 2020
Published online: 1 December 2020

Abstract

Present study explores the effect of Gaussian white noise on quadrupole oscillator strength (QOS) of impurity doped quantum dot (QD). In view of this QOS profiles have been monitored as various relevant physical parameters vary over a range with and without noise. Two distinct pathways viz. additive and multiplicative have been conceived for the entrance of noise to the system. The QOS profiles exhibit rather regular behavior in absence of noise and in presence of additive noise in similar ways. However, multiplicative noise appears to be successful in bringing about important aspects like maximization, minimization and saturation in the QOS profiles and also for production of large QOS. The outcomes of the study are expected to have substantial impact on nonlinear optical properties of opto-electronic devices comprising of QD where noise plays some active role.