Impurity-Related Linear and Nonlinear Optical Absorption Coefficients of Unstrained (In,Ga)N-GaN Symmetric Coupled QWs

• Authors: H. El Ghazi , A. John Peter
• Languages of publication: EN

Abstracts

EN

Linear, third-order nonlinear and total optical absorption coefficients associated with intra-conduction band in wurtzite unstrained (In,Ga)N-GaN coupled quantum wells are calculated. Based on the effective-mass and the one-band parabolic approximations, the well and the barrier-widths effects are investigated variationally under finite confinement potential barrier. The results indicate that the structure size have a great influence on the optical properties. The results reveal also that larger optical absorption coefficients are obtained compared to single quantum well and a significant red-shift is obtained as the structure size increases. It is found that the modulation of the absorption coefficients can be easily obtained by adjusting the barrier and/or the well widths.

Keywords

EN

78.67.De; 78.20.Ci; 42.65.-k

Discipline

• 78.20.Ci: Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity)
• 78.67.De: Quantum wells
• 42.65.-k: Nonlinear optics

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2015
• Volume: 127
• Issue: 3
• Pages: 787-790

Dates

published

2015-03

received

2014-04-29

(unknown)

2014-12-06

Contributors

author

H. El Ghazi

• LPS, Faculty of Science, Dhar EL Mehrez, BP 1796 Fes-Atlas, Morocco
• Special Mathematics, CPGE Rabat, Morocco

author

A. John Peter

• Department of Physics, Govt. Arts and Science College, Melur-625106, Madurai, India

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Identifiers

DOI

10.12693/APhysPolA.127.787