Scopus
YÖKSİS Eşleşti
Linear and nonlinear intersubband optical absorptions in an asymmetric rectangular quantum well
European Physical Journal B · Şubat 2007
YÖKSİS Kayıtları
Linear and nonlinear intersubband optical absorptions in an asymmetric rectangular quantum well
The European Physical Journal B · 2007 SCI-Expanded 108 atıf
PROFESÖR İBRAHİM KARABULUT →
Linear and nonlinear intersubband optical absorptions in an asymmetric rectangular quantum well
The European Physical Journal B · 2007 SCI-Expanded
PROFESÖR HALUK ŞAFAK →
Linear and nonlinear intersubband optical absorptions in an asymmetric rectangular quantum well
The European Physical Journal B · 2007 SCI-Expanded
PROFESÖR ÜLFET ATAV →
Makale Bilgileri
DergiEuropean Physical Journal B
Yayın TarihiŞubat 2007
Cilt / Sayfa55 · 283-288
Scopus ID2-s2.0-33847650872
Özet
The linear and nonlinear intersubband optical absorptions in Al xlGa 1-xlAs/GaAs/Al xr Ga 1-xrAs asymmetric rectangular quantum well are studied within the framework of the density matrix formalism. We have calculated the electron energy levels and the envelope wave functions using the effective mass approach. In addition, we have obtained an expression for saturation intensity. It is shown that the parameters such as asymmetry and width of potential well not only shift the peak positions in absorption spectrum but also considerably modify their height. These results suggest that the absorption process can be easily controlled by the structure parameters of an asymmetric rectangular quantum well. Also, the incident optical intensity has a great effect on the total absorption spectrum. We have seen that the absorption peak is reduced by half when the optical intensity is approximately 0.8 MW/cm 2 for well width L=90 Å and β=0.5. Moreover, it is seen that the saturation intensity is quite sensitive to the structure parameters of an asymmetric rectangular quantum well. Thus, the results presented here can be useful for electro-optical modulators and photodetectors in the infrared region. © EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2007.
Yazarlar (4)
1
Ibrahim Karabulut
2
Ülfet Atav
3
Haluk Şafak
4
Mehmet Tomak
Anahtar Kelimeler
42.65.Ky Frequency conversion; harmonic generation, including higher-order harmonic generation
78.67.De Quantum wells
Kurumlar
Middle East Technical University (METU)
Ankara Turkey
Selçuk Üniversitesi
Selçuklu Turkey
Metrikler
227
Atıf
4
Yazar
2
Anahtar Kelime