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Calculation of the changes in the absorption and refractive index for intersubband optical transitions in a quantum box
Author(s) -
Karabulut İ.,
Ünlü S.,
Şafak H.
Publication year - 2005
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.200541093
Subject(s) - refractive index , absorption (acoustics) , intensity (physics) , optics , density matrix , quantum well , step index profile , quantum , optoelectronics , materials science , physics , quantum mechanics , laser , optical fiber , fiber optic sensor , graded index fiber
Analytic forms of the changes of the absorption and refractive index associated with intersubband optical transitions in a quantum box are obtained by using the compact density matrix approach. Numerical results are presented for a typical AlGaAs/GaAs quantum box system. The linear, third‐order nonlinear, and total refractive‐index and absorption changes are examined as a function of the incident optical intensity. The results obtained show that the incident optical intensity has a great effect on the total absorption and refractive‐index changes. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)