Dilute magnetic semiconductor quantum-well structures for magnetic field tunable far-infrared/terahertz absorption

Ivana Savić, Vitomir Milanović, Zoran Ikonić, Dragan Indjin, Vladimir Jovanović, Paul Harrison

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

The design of ZnCdSe-ZnMnSe-based quantum wells is considered, in order to obtain a large shift of the peak absorption wavelength in the far infrared range, due to a giant Zeeman splitting with magnetic field, while maintaining a reasonably large value of peak absorption. A triple quantum-well structure with a suitable choice of parameters has been found to satisfy such requirements. A maximal tuning range between 14.6 and 34.7 meV is obtained, when the magnetic field varies from zero to 5 T, so the wavelength of the absorbed radiation decreases from 85.2 to 35.7 μm with absorption up to 1.25% at low temperatures. These structures might form the basis for magnetic field tunable photodetectors and quantum cascade lasers in the terahertz range.

Original languageEnglish
Article number1344143
Pages (from-to)1614-1621
Number of pages8
JournalIEEE Journal of Quantum Electronics
Volume40
Issue number11
Early online date18 Oct 2004
DOIs
Publication statusPublished - 1 Nov 2004
Externally publishedYes

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