1. Dynamic phase response and amplitude-phase coupling of self-assembled semiconductor quantum dots.
- Author
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Lingnau, Benjamin, Herzog, Bastian, Kolarczik, Mirco, Woggon, Ulrike, Lüdge, Kathy, and Owschimikow, Nina
- Subjects
SEMICONDUCTORS ,REFRACTIVE index ,BULK solids ,QUANTUM dots ,ELECTRONIC structure - Abstract
The optical excitation of semiconductor gain media introduces both gain and refractive index changes, commonly referred to as amplitude-phase coupling. Quantum-confined structures with an energetically well separated carrier reservoir usually exhibit a decreased amplitude-phase coupling compared to bulk materials. However, its magnitude and definition is still controversially discussed. We investigate the fundamental processes influencing the amplitude-phase coupling in semiconductor quantum-dot media using a coupled-carrier rate-equation model. We are able to analyze the dependence on the electronic structure and suggest routes towards an optimization of the dynamic phase response of the gain material. [ABSTRACT FROM AUTHOR]
- Published
- 2017
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