Title:

Designing of GaAs/AlGaAs multiple quantum wells to enhance magnetooptical Kerr effect

Group publication title:

Optica Applicata

Creator:

Bożym, Janusz ; Dudziak, Eugeniusz ; Pruchnik, Dariusz ; Herezo, Krzysztof ; Wasilewski, Zbigniew R.

Contributor:

Gaj, Miron. Redakcja

Subject and Keywords:

optyka ; magnetooptical Kerr effect (MOKE) ; GaAs/AlGaAs MQWs ; interference

Description:

Optica Applicata, Vol. 37, 2007, nr 1-2, s. 107-115

Abstrakt:

In this article we study magnetooptical Kerr effect (MOKE) of the GaAs/Al0.31Ga0.69As multiple quantum wells (MQWs). Firstly, comparing the measured spectra of MOKE with the theoretical ones we established parameters of the sample such as energy of excitons in quantum wells, their oscillation strengths, damping coefficients. Then using the obtained parameters we tried to establish which quantum well from the 30 quantum wells existing in the sample is the most responsible for the value of rotation of polarization plane of light in measured MOKE. Finally we analysed how the geometry of the structure influences the value of the rotation. We changed the widths of all barriers between the wells of MWQs while the other parameters remained unchanged. It occurred that the rotation of polarization plane changed periodically. A big enhancement of MOKE can be obtained for certain widths of barriers. It confirms that the interference plays a crucial role in the MOKE.

Publisher:

Oficyna Wydawnicza Politechniki Wrocławskiej

Place of publication:

Wrocław

Date:

2007

Resource Type:

artykuł

Source:

<sygn. PWr A3481II> ; click here to follow the link ; click here to follow the link

Language:

eng

Relation:

Optica Applicata ; Optica Applicata, Vol. 37, 2007 ; Optica Applicata, Vol. 37, 2007, nr1-2 ; Politechnika Wrocławska. Wydział Podstawowych Problemów Techniki

Rights:

Wszystkie prawa zastrzeżone (Copyright)

Access Rights:

Dla wszystkich w zakresie dozwolonego użytku

Location:

Politechnika Wrocławska