High-β micropillar lasers with site-controlled quantum dots fabricated via a buried stressor approach
| Autor: | F. Gericke, Xavier Porte, Tobias Heindel, Alexander Schlehahn, Sven Rodt, Stephan Reitzenstein, Tobias Heuser, Arsenty Kaganskiy, André Strittmatter |
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| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Materials science business.industry 02 engineering and technology 021001 nanoscience & nanotechnology Laser 01 natural sciences Temperature measurement Optical quality law.invention Quantum dot law Electric field 0103 physical sciences Optoelectronics 0210 nano-technology business Realization (systems) Lasing threshold Electron-beam lithography |
| Zdroj: | 2017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC). |
| Popis: | We report on the realization of quantum-dot (QD) micropillar lasers based on a buried stressor growth approach [1]. This method allows for the site-controlled growth and device integration of QDs with high optical quality [2, 3]. Compared to other concepts for site-controlled QD growth, this approach has the important advantage that the number of QDs within a small ensemble located in the center of the cavity can be controlled by the design of the buried stressor. This allows one to fine-tune the gain and, thus, to engineer the devices for few-QD lasing or for single-QD emission regimes. Moreover, the applied technique ensures that the ensemble with a controlled number of QDs is located in the electric field maximum at the center of the micropillars to provide maximum light-matter coupling strength. |
| Databáze: | OpenAIRE |
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