Effects of Polaron and Quantum Confinement on the Nonlinear Optical Properties in a GaAs-As Quantum Well WireReport as inadecuate




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Journal of Nanomaterials - Volume 2014 2014, Article ID 823065, 6 pages -

Research Article

Department of Physics, Fatima College, Madurai 625 018, India

Department of Physics, Government Arts College, Melur 625 106, Madurai, India

Department of Chemical Engineering, College of Engineering, Kyung Hee University, 1732 Deogyeong-daero, Giheung, Yongin, Gyeonggi 446-701, Republic of Korea

Received 17 November 2013; Revised 26 January 2014; Accepted 10 February 2014; Published 11 March 2014

Academic Editor: Wen Lei

Copyright © 2014 L. Caroline Sugirtham et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The binding energy of a polaron confined in a GaAs-As quantum well wire is calculated within the framework of the variational technique and Lee-Low Pines approach. The polaron-induced photoionization cross section as a function of normalized photon energy for a on-centre donor impurity in the quantum wire is investigated. The oscillator strength with the geometrical effect is studied taking into account the polaron effects in a GaAs-Ga0.8Al0.2As quantum well wire. The effect of polaron on the third-order susceptibility of third harmonic generation is studied. Our theoretical results are shown to be in good agreement with previous investigations.





Author: L. Caroline Sugirtham, A. John Peter, and Chang Woo Lee

Source: https://www.hindawi.com/



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