Self-consistent Projection Operator Theory of Intersubband Absorbance in Semiconductor Quantum Wells

I. Waldmüller, J. Förstner, A. Knorr, in: K. Morawetz (Ed.), Nonequilibrium Physics at Short Time Scales, Springer Berlin Heidelberg, Berlin, Heidelberg, 2004.

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Due to their many-particle character and their application in quantum cascade lasers, optical intersubband excitations in semiconductor quantum wells have become the focus of many recent publications [1,2]. In samples of high quality, intrinsic processes like electron-electron and electron-phonon many particle correlations determine the basic optical and transport properties such as lineshape and ultrafast dynamics. At the same time, intersubband excitations allow the direct investigation of dynamical properties of an important model system of many particle physics - the two-dimensional electron gas. We here present a microscopic theory for the intersubband dynamics and absorption. The calculation of absorption spectra of MQW systems is in principle composed of two parts: the determination of the polarization in a single quantum well within a density matrix approach as the source of electromagnetic radiation (Fig. 1a) and the calculation of the generated fields in the geometry of interest (Fig. 1b) within a Green's function approach [3,4]. We will here focus on the so-called single-pass geometry (cf. Fig. 1b, [5]).
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Nonequilibrium Physics at Short Time Scales
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Waldmüller I, Förstner J, Knorr A. Self-consistent Projection Operator Theory of Intersubband Absorbance in Semiconductor Quantum Wells. In: Morawetz K, ed. Nonequilibrium Physics at Short Time Scales. Berlin, Heidelberg: Springer Berlin Heidelberg; 2004. doi:10.1007/978-3-662-08990-3
Waldmüller, I., Förstner, J., & Knorr, A. (2004). Self-consistent Projection Operator Theory of Intersubband Absorbance in Semiconductor Quantum Wells. In K. Morawetz (Ed.), Nonequilibrium Physics at Short Time Scales. Berlin, Heidelberg: Springer Berlin Heidelberg. https://doi.org/10.1007/978-3-662-08990-3
@inbook{Waldmüller_Förstner_Knorr_2004, place={Berlin, Heidelberg}, title={Self-consistent Projection Operator Theory of Intersubband Absorbance in Semiconductor Quantum Wells}, DOI={10.1007/978-3-662-08990-3}, booktitle={Nonequilibrium Physics at Short Time Scales}, publisher={Springer Berlin Heidelberg}, author={Waldmüller, Ines and Förstner, Jens and Knorr, Andreas }, editor={Morawetz, KlausEditor}, year={2004} }
Waldmüller, Ines, Jens Förstner, and Andreas Knorr. “Self-Consistent Projection Operator Theory of Intersubband Absorbance in Semiconductor Quantum Wells.” In Nonequilibrium Physics at Short Time Scales, edited by Klaus Morawetz. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. https://doi.org/10.1007/978-3-662-08990-3.
I. Waldmüller, J. Förstner, and A. Knorr, “Self-consistent Projection Operator Theory of Intersubband Absorbance in Semiconductor Quantum Wells,” in Nonequilibrium Physics at Short Time Scales, K. Morawetz, Ed. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004.
Waldmüller, Ines, et al. “Self-Consistent Projection Operator Theory of Intersubband Absorbance in Semiconductor Quantum Wells.” Nonequilibrium Physics at Short Time Scales, edited by Klaus Morawetz, Springer Berlin Heidelberg, 2004, doi:10.1007/978-3-662-08990-3.
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