Journal of
Electrical and Electronics Engineering Research

  • Abbreviation: J. Electrical Electron. Eng. Res.
  • Language: English
  • ISSN: 2141-2367
  • DOI: 10.5897/JEEER
  • Start Year: 2009
  • Published Articles: 58

Full Length Research Paper

Dependence of second order nonlinear susceptibility and efficiency on shape of CdS quantum dot

M. Paul*, P. Bhattacharya, B. Das and S. Rani
Department of Electronics and Communication Engineering, National Institute of Technology Silchar, Silchar, Assam, India.
Email: [email protected]

  •  Accepted: 06 September 2011
  •  Published: 30 September 2011

Abstract

 

This paper deals with the dependence of second order nonlinear susceptibility and second harmonic generation (SHG) efficiency on the shape of CdS quantum dot. A relation has been found between the electronic structure and second order nonlinear susceptibility. The effective mass approximation has been used to find the energy levels. We have considered both intra band and inter band near resonant transitions for SHG and theoretically investigated the SHG efficiency for different shapes of CdS quantum dot inspired by experiments conducted previously by Aktsipitrov (1995).

 

Key wordsSecond order nonlinear susceptibility; intraband transition, interband transition, SHG efficiency