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Third‐order nonlinear optical properties of parabolic and semiparabolic quantum wells
Author(s) -
Wang GuangHui,
Guo Qi,
Guo KangXian
Publication year - 2003
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200301753
Subject(s) - quantum well , density matrix , nonlinear system , quantum , third order , relaxation (psychology) , tensor (intrinsic definition) , second harmonic generation , condensed matter physics , physics , harmonic , mathematics , mathematical analysis , quantum mechanics , geometry , psychology , social psychology , laser , philosophy , theology
A detailed procedure for the calculation of the third‐harmonic‐generation susceptibility tensor is given in parabolic and semiparabolic quantum wells, and an analytic formula for the third‐harmonic‐generation susceptibility is obtained by the compact density matrix approach and an iterative procedure. Finally, numerical results are presented for typical GaAs/AlGaAs parabolic and semiparabolic quantum wells. The calculated results show that the third‐harmonic‐generation susceptibilities in parabolic quantum wells are over one order of magnitude greater than in semiparabolic quantum wells, and are over eight orders of magnitude greater than in bulk GaAs. In addition, the third‐harmonic‐generation susceptibilities are related to the parabolic confinement frequency and the relaxation rate.