Single quantum dot lasers and coupled cavity arrays

单量子点激光器和耦合腔阵列

• 批准号: 269240809
• 负责人: Dr. Christopher Gies
• 金额: --
• 依托单位: Institut für Festkörperphysik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2015
• 资助国家: 德国
• 起止时间: 2014-12-31 至 2020-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/269240809?language=en
• 关键词: Single; quantum; dot; lasers; coupled

The goal of this project is the realization and investigation of single emitter lasers and coupled laser arrays on the basis of semiconductor quantum dots. The regime of single-emitter lasing fundamentally differs from that of conventional lasers and offers novel and intriguing physical concepts and applications. Such lasers are driven by quantum- and correlation effects that are, currently, not completely understood. In addition to their theoretical description and conceptual understanding the technological realization and experimental characterisation provide demanding challenges. By combining microscopical modelling, quantum-optical spectroscopy and nano-scale sample preparation, the project aims at providing a conclusive understanding of single-emitter lasers. One way of achieving this will be to use resonant, as well as two-color excitation schemes in microcavity resonators with ultra-high quality factors and low quantum-dot density.A particular focus is on electrically pumped single-emitter lasers that are of highest relevance for efficient low-power optoelectronic devices. This topic lends from the expertise gained in the investigations of these systems under optical excitation. The realization and understanding of these new laser forms will be a milestone in the development of novel sources of photons with tunable statistical properties. A further innovative sub-project adds to this by coupling several single-quantum-dot lasers to a laser array, which will form the basis of studies on collective effects in and outside the lasing regime.The close and intensive collaboration between theory, technology and experiment is key to the project. Sample preparation and spectroscopy will benefit from the input and feedback drawn from microscopical models. This will lead to the full description and fundamental understanding of the underlying physical processes, enabling quantitative predictions of single-emitter lasing activity in future applications.

本项目的目标是实现和研究基于半导体量子点的单发射激光器和耦合激光器阵列。单发射激光器的机制与传统激光器有着根本的不同，它提供了新颖而有趣的物理概念和应用。这种激光器是由量子和相关效应驱动的，目前还没有完全理解。除了它们的理论描述和概念理解之外，技术实现和实验表征提供了苛刻的挑战。通过结合显微镜建模，量子光学光谱学和纳米级样品制备，该项目旨在提供对单发射激光器的结论性理解。实现这一目标的一种方法是在具有超高品质因数和低量子点密度的微腔谐振器中使用谐振和双色激发方案。本主题借自在光激发下这些系统的调查中获得的专业知识。对这些新激光形式的认识和理解将是发展具有可调统计特性的新型光子源的里程碑。另一个创新的子项目通过将几个单量子点激光器耦合到激光器阵列来增加这一点，这将成为研究激光机制内外集体效应的基础。理论，技术和实验之间的密切和密集的合作是该项目的关键。样品制备和光谱学将受益于从微观模型中获得的输入和反馈。这将导致对潜在物理过程的完整描述和基本理解，从而能够在未来应用中定量预测单发射极激光活动。

项目成果

Exploring the Photon-Number Distribution of Bimodal Microlasers with a Transition Edge Sensor

• DOI: 10.1103/physrevapplied.9.064030
• 发表时间: 2017-09
• 期刊: Physical Review Applied
• 影响因子: 4.6
• 作者: E. Schlottmann;M. Helversen;H. Leymann;T. Lettau;Felix Kruger;M. Schmidt;C. Schneider;M. Kamp;S. Hofling;J. Beyer;J. Wiersig;S. Reitzenstein

Controlling the gain contribution of background emitters in few-quantum-dot microlasers

• DOI: 10.1088/1367-2630/aaa477
• 发表时间: 2017-04
• 期刊: New Journal of Physics
• 影响因子: 3.3
• 作者: F. Gericke;Mawussey Segnon;M. Helversen;C. Hopfmann;T. Heindel;Christian Schneider;Sven Höfling