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Microscopic Theory of Terahertz Spectroscopy on Semiconductor Nanostructures
In this Thesis, studies with optical and terahertz light on semiconductor quantum wells are presented. Experiments are analyzed by means of a microscopic theory. A short introduction in chapter 1 is followed by the theoretical basis in chapter 2. After, two kinds of experiments are shown: Chapter...
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| Định dạng: | Dissertation |
| Ngôn ngữ: | German |
| Được phát hành: |
Philipps-Universität Marburg
2013
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| Những chủ đề: | |
| Truy cập trực tuyến: | Bài toàn văn PDF |
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| Tóm tắt: | In this Thesis, studies with optical and terahertz light on semiconductor quantum wells are presented. Experiments are analyzed by means of a microscopic theory.
A short introduction in chapter 1 is followed by the theoretical basis in chapter 2.
After, two kinds of experiments are shown: Chapter 3 is devoted to terahertz spectroscopy on bare quantum wells. In chapter 4, the optical light couples in addition to a micro cavity.
Both topics are of fundamental interest due to the similarity of excitons with atomic systems. A basic effect connecting both topics is the AC Stark effect: It describes the splitting of spectral lines due to the presence of an electric field. For atomic systems, this is called Rabi splitting. Chapter 3 describes experiments with terahertz-induced Rabi splitting.
In chapter 4, terahertz spectroscopy on exciton-polaritons is described. These appear due to the coupling of the quantum wells to a micro cavity: The 1s-exciton resonance splits into lower and higher exciton-polaritons.
Concluding remarks and a short outlook are given in chapter 5. |
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| DOI: | 10.17192/z2013.0252 |