Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Advanced materials research

Third-Harmonic Generation in Special Parabolic Quantum Wells

You Bin Yu

Published Sep 18, 2013• 0 citations
Publisher

Abstract

Third-harmonic generation in a special asymmetric quantum well is investigated. The third-harmonic generation coefficient is carried out by applying compact-density-matrix method. The numerical results are presented for a GaAs/AlGaAs asymmetric quantum well. The very large third-harmonic generation coefficient is obtained in this quantum well. Moreover, the third-harmonic generation coefficient dependents on the quantum well parameters are investigated, respectively.

DOI
10.4028/www.scientific.net/amr.760-762.392

Related papers

The Third Harmonic Generation in Asymmetrical Quantum Well

Yunbao Zheng

Within the framework of the compact density matrix approach and an iterative method,the third harmonic generation for asymmetrical quantum well are investigated.Finally,the numerical results are presented for a typical GaAs/AlGaAs asymmetric quantum well.The larger third harmonic generation was obtained in this special quantum well.This is a feasible way to get fine nonlinear materials in experiment.

Journal of Guangdong Polytechnic Normal University•Jan 1, 2009•0 citations

Third-order nonlinear optical effect in semiconductor quantum wells

Youbin Yu

Third-order optical nonlinearities in semi-parabolic quantum wells are studied. The third-harmonic generation coefficient is obtained by using compact-density-matrix approach and iterative method, and the numerical results are presented for spical semi-parabolic quantum wells. The very large third-harmonic-generation coefficient is obtained in this semi-parabolic quantum wells and it is over 10 times bigger than that obtained in parabolic quantum wells. In addition, the relations among the third-harmonic-generation coefficient, the photons energy, the parabolic confinement frequency, and the relaxation constant are also investigated, respectively.

Wireless and Optical Communications Conference•May 1, 2013•0 citations

Excitonic effects on the third-harmonic generation in parabolic quantum dots

Guanghui Wang, Kangxian Guo

Excitonic effects on the third-harmonic-generation coefficient for disclike parabolic quantum dots are studied, and an analytic formula for the third-harmonic-generation coefficient is obtained by using the compact-density-matrix approach and an iterative method. Numerical results are presented for typical GaAs/AlGaAs parabolic quantum dots. The results show that the third-harmonic-generation coefficient is greatly enhanced because the excitons are localized in the quantum dots - it is over three times that obtained by just considering electron states - and that it is very sensitively dependent on the exciton confinement. In addition, the third-harmonic-generation coefficient is related to the relaxation constant.

Journal of Physics Condensed Matter•Aug 16, 2001•110 citations

Study on the third-harmonic generation in Morse quantum well

YU Feng-mei

Abstrcat The linear and nonlinear susceptibilities had been obtained by the compact-density-matrix approach in presence of the multifrequency incident optical field. An analytic formula for third-harmonic-generation was presented by graphic technology(Feynman). Numerical results were presented for typical GaAs/AlGaAs Morse quantum well. The results showed that third-harmonic-generation increased with the enhancement of a and decreased with relaxation constant increasing. Therefore, if the parameter was increased or the relaxation constant was reduced with the effects on the system associated by environment and other factors limited to minimum,a large third-harmonic-generation coefficient would be obtained.

Journal of Zhongkai Agrotechnical College•Jan 1, 2005•0 citations

Study on linear and third-order nonlinear optical absorption in special asymmetric quantum wells

Qi Guo

Authors give a detailed procedure for the calculation of the linear and third-order nonlinear optical absorption in special asymmetric quantum wells. It is obtained an analytic formula for the optical absorption by the compact density matrix method and the iterative procedure. Finally, the numerical results are presented for typical GaAs/AlGaAs asymmetric quantum wells. The numerical results show that the incident optical intensity and the asymmetry of the quantum wells have great influences on the optical absorption.

Chinese Journal of Quantum Electronics•Jan 1, 2004•0 citations

Study of third harmonic generation in quantum wells with a new potential

Guo Kang-xia

The third harmonic generation coefficients( THG) in quantum wells with a new potential are studied theoretically. We obtain eigenfunctions and energy eigenvalues by means of solving Schrodinger equation within the framework of effective mass approximation method. The analytic expressions of the third-harmonic generation coefficients can be got using the compact-density-matrix approach and iterative method. It is found that the THG coefficients are affected by the width of the quantum well d and the parameter U0.

Journal of Guangzhou University•Jan 1, 2015•0 citations
Third-harmonic generation in a special asymmetric quantum well is investigated. The third-harmonic generation coefficient is carried out by applying compact-density-matrix method. The numerical results are presented for a GaAs/AlGaAs asymmetric quantum well. The very large third-harmonic generation coefficient is obtained in this quantum well. Moreover, the third-harmonic generation coefficient dependents on the quantum well parameters are investigated, respectively.
Third-order optical nonlinearities in semi-parabolic quantum wells are studied. The third-harmonic generation coefficient is obtained by using compact-density-matrix approach and iterative method, and the numerical results are presented for spical semi-parabolic quantum wells. The very large third-harmonic-generation coefficient is obtained in this semi-parabolic quantum wells and it is over 10 times bigger than that obtained in parabolic quantum wells. In addition, the relations among the third-harmonic-generation coefficient, the photons energy, the parabolic confinement frequency, and the relaxation constant are also investigated, respectively.
Excitonic effects on the third-harmonic-generation coefficient for disclike parabolic quantum dots are studied, and an analytic formula for the third-harmonic-generation coefficient is obtained by using the compact-density-matrix approach and an iterative method. Numerical results are presented for typical GaAs/AlGaAs parabolic quantum dots. The results show that the third-harmonic-generation coefficient is greatly enhanced because the excitons are localized in the quantum dots - it is over three times that obtained by just considering electron states - and that it is very sensitively dependent on the exciton confinement. In addition, the third-harmonic-generation coefficient is related to the relaxation constant.
Abstrcat The linear and nonlinear susceptibilities had been obtained by the compact-density-matrix approach in presence of the multifrequency incident optical field. An analytic formula for third-harmonic-generation was presented by graphic technology(Feynman). Numerical results were presented for typical GaAs/AlGaAs Morse quantum well. The results showed that third-harmonic-generation increased with the enhancement of a and decreased with relaxation constant increasing. Therefore, if the parameter was increased or the relaxation constant was reduced with the effects on the system associated by environment and other factors limited to minimum,a large third-harmonic-generation coefficient would be obtained.
Authors give a detailed procedure for the calculation of the linear and third-order nonlinear optical absorption in special asymmetric quantum wells. It is obtained an analytic formula for the optical absorption by the compact density matrix method and the iterative procedure. Finally, the numerical results are presented for typical GaAs/AlGaAs asymmetric quantum wells. The numerical results show that the incident optical intensity and the asymmetry of the quantum wells have great influences on the optical absorption.
The third harmonic generation coefficients( THG) in quantum wells with a new potential are studied theoretically. We obtain eigenfunctions and energy eigenvalues by means of solving Schrodinger equation within the framework of effective mass approximation method. The analytic expressions of the third-harmonic generation coefficients can be got using the compact-density-matrix approach and iterative method. It is found that the THG coefficients are affected by the width of the quantum well d and the parameter U0.