کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1495341 992933 2013 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Intersubband resonant enhancement of the nonlinear optical properties in asymmetric (CdS/ZnSe)/X-BeTe based quantum wells
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Intersubband resonant enhancement of the nonlinear optical properties in asymmetric (CdS/ZnSe)/X-BeTe based quantum wells
چکیده انگلیسی

The linear and nonlinear optical properties in asymmetric quantum wells, especially the second-harmonic generation susceptibility, the optical absorption and the refractive index change are investigated numerically for (CdS/ZnSe)/BeTe materials. The energy eigenvalues and their corresponding eigenfunctions are obtained numerically by solving the Schrodinger equation. The optical properties are calculated within the framework of the density matrix formalism. Various values of the doping density and the optical intensity on the nonlinear optical properties are considered in the calculations. Numerical results on typical CdS/ZnSe materials reveal a resonant enhancement of the second harmonic generation and the third-order optical nonlinearities. Our calculations show that results done for band alignment relative to X-BeTe conduction band minimum are extremely improved in comparison with those done for Γ-minimum.


► Our modeled (CdS/ZnSe)/BeTe based structure show an important SHG and third-order susceptibility.
► The absorption coefficient and the refractive index changes are also studied.
► The nonlinear terms must be taken into consideration especially near the resonance.
► The band alignment relative to X-BeTe conduction band minimum show extremely enhanced results than the Γ-minimum.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optical Materials - Volume 35, Issue 5, March 2013, Pages 875–880
نویسندگان
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