Interplay between noise and position-dependent dielectric screening function in modulating nonlinear optical properties of impurity doped quantum dots

被引：8

作者：

Bera, Aindrila ^{[1
]}

Ganguly, Jayanta ^{[2
]}

Saha, Surajit ^{[3
]}

Ghosh, Manas ^{[1
]}

机构：

[1] Visva Bharati Univ, Dept Chem, Chem Phys Sect, Birbhum 731235, W Bengal, India

[2] Brahmankhanda Basapara High Sch, Dept Chem, Birbhum 731215, W Bengal, India

[3] Bishnupur Ramananda Coll, Dept Chem, Bankura 722122, W Bengal, India

来源：

OPTIK | 2016年 / 127卷 / 16期

关键词：

Quantum dot; Impurity; Gaussian white noise; Electro-optic effect; Third-order nonlinear optical susceptibility; Position-dependent dielectric screening function; REFRACTIVE-INDEX CHANGES; ABSORPTION-COEFFICIENTS; 2ND-HARMONIC GENERATION; HYDROGENIC IMPURITY; DIAMAGNETIC SUSCEPTIBILITY; ELECTROABSORPTION PROCESS; INTERSUBBAND TRANSITIONS; BINDING-ENERGIES; EFFECTIVE-MASS; DONOR;

D O I：

10.1016/j.ijleo.2016.04.023

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We study the modulation of electro-optic effect (EOE) and third-order nonlinear optical susceptibility (TONOS) of impurity doped quantum dot (QD) under the influence of position dependent dielectric screening function (PDDSF) in presence and absence of noise. The profiles of above nonlinear optical (NLO) properties have been analyzed as a function of incident photon energy using both static dielectric constant (SDC) and PDDSF. Noise function assumes a Gaussian distribution and applied to the system additively as well as multiplicatively. Critical comparison between the profiles of above NLO properties using SDC and PDDSF has been conducted to appreciate the role of the latter. In addition, the role of mode of application of noise (additive/multiplicative) on the said profiles has also been analyzed. The profiles are found to display shift of peak position and amplification of peak value under different conditions. The observations reveal subtle interplay between noise and PDDSF in tailoring the intricate features of EOE and TONOS profiles and bear importance in the related field of research. (C) 2016 Elsevier GmbH. All rights reserved.

引用

页码：6771 / 6778

页数：8

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