Microscopic Theory of the Optical Properties of Metastable Semiconductor Compounds and Heterostructures

亚稳态半导体化合物和异质结构光学性质的微观理论

• 批准号: 5379605
• 负责人: Professor Dr. Stephan W. Koch (†)
• 金额: --
• 依托单位: Fachbereich 13: Physik
• 依托单位国家: 德国
• 项目类别: Research Units
• 财政年份: 2002
• 资助国家: 德国
• 起止时间: 2001-12-31 至 2008-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/5379605?language=en
• 关键词: Microscopic; Theory; Optical; Properties; Metastable

The microscopic theory for the optical and electronic properties of semiconductors is further developed and applied to model the linear and nonlinear optical properties of metastable semiconductor compounds. Besides analyzing time-resolved pumpprobe and four-wave-mixing spectroscopy the main goal is to provide an adequate theory for the gain and luminescence spectra and laser action in highly excited systems. For this purpose it is necessary to resolve the relevant bandstructure issues, study the carrier transport into the active regions, and address the essential structural properties. The understanding and modeling of the microscopic processes that determine the optical response is a crucial step in order to achieve a controlled way of designing heterostructures with optimal properties. In this project it is planned to closely collaborate with experimentalists who grow, characterize and analyze the metastable semiconductor compound structures. This synergistic combination of theoretical and experimental investigations has been very successful in the past and should enable us to develop and improve also heterostructures based on the new materials.

半导体光学和电子特性的微观理论得到进一步发展，并应用于模拟亚稳态半导体化合物的线性和非线性光学特性。除了分析时间分辨泵浦探针和四波混合光谱之外，主要目标是为高激发系统中的增益和发光光谱以及激光作用提供适当的理论。为此，有必要解决相关的能带结构问题，研究载流子输运到有源区，并解决基本的结构特性。为了实现以受控方式设计具有最佳性能的异质结构，对决定光学响应的​​微观过程的理解和建模是至关重要的一步。在该项目中，计划与生长、表征和分析亚稳态半导体化合物结构的实验人员密切合作。这种理论和实验研究的协同结合在过去非常成功，应该使我们能够开发和改进基于新材料的异质结构。