Light-matter interaction of Exciton Polaritons at Telecommunication Wavelengths (LIEPOLATE)

电信波长下激子极化子的光与物质相互作用 (LIEPOLATE)

• 批准号: 192757433
• 负责人: Professor Dr. Martin Kamp
• 金额: --
• 依托单位: Institut of Physics
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2011
• 资助国家: 德国
• 起止时间: 2010-12-31 至 2015-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/192757433?language=en
• 关键词: Light; matter; interaction; Exciton; Polaritons

This proposal targets the demonstration of an exciton-polariton laser in the 1.31 μm wavelength range. This will be enabled by the combination of novel dilute nitride materials grown on GaAs substrates in combination with established GaAs-based technology for the fabrication of high quality microcavity structures. Since dilute nitride quantum wells (QWs) enable emission in the telecommunication window around 1.31 μm (which is inaccessible with conventional nitrogen-free QWs on GaAs), this new approach will allow studies of the strong coupling of a QW exciton with a photonic mode of a microcavity at telecom wavelengths. After optimization of the dilute nitride QW quality, especially in terms of high structural homogeneity, reduced lateral composition fluctuations and carrier localization, these emitters will be incorporated into microcavities to drive this system into the strong-coupling regime. Here, hybridized quasi-particles called exciton-polaritons are formed. Exciton-polaritons can condense in the ground state if a critical population density is exceeded, and one observes the onset of so-called polariton lasing, which in contrast to photon lasers occurs without population inversion. This allows the realization of ultra-low threshold exciton-polariton laser devices at telecom wavelengths. In addition, the developments envisaged in this proposal will reveal new possibilities for studies of the fascinating properties related to exciton-polaritons, like e.g. superfluid phenomena, quantum phase transitions, logic devices, etc. at telecommunication wavelengths.

该建议针对1.31μm波长范围内的激动人心激光的演示。这将通过在GAAS底物上生长的新稀氮化物材料与已建立的基于GAAS的技术结合使用，用于制造高质量的微腔结构。由于稀释氮化物量子井（QWS）可在1.31μm左右的电信窗口中发射（与GAAS上的常规无氮QWS无法访问），因此这种新方法将允许研究QW激发量与QW兴奋节的强烈耦合，该模式与电信的微磁场模式在Telecompentss phavelsements wavellents wavellents wavellents。在优化稀氮化质量质量（尤其是在高结构均匀性方面），横向组成波动和载体定位后，这些发射器将被纳入微腔，以将该系统纳入强耦合方案。在这里，形成了称为“刺激二利机”的杂交准粒子。如果超过关键的种群密度，则激子 - 波利顿可以在基态下凝结，并且观察到所谓的北极星激光的发作，与光子激光器相反，它在没有种群反转的情况下发生。这允许在电信波长处实现超低阈值Inter-Polariton激光器。此外，该提案中设想的发展将揭示与Inventon-Polaritons相关的引人入胜的特性的新可能性，例如电信波长处的超流体现象，量子相变，逻辑设备等。

项目成果

Low dimensional GaAs/air vertical microcavity lasers

• DOI: 10.1063/1.4866805
• 发表时间: 2014-02
• 期刊: Applied Physics Letters
• 影响因子: 4
• 作者: J. Gessler;T. Steinl;A. Mika;J. Fischer;G. Sȩk;J. Misiewicz;S. Höfling;C. Schneider;M. Kamp

On the oscillator strength in dilute nitride quantum wells on GaAs

GaAs 上稀氮化物量子阱的振荡强度

• DOI: 10.1063/1.4729320
• 发表时间: 2012
• 期刊: Journal of Applied Physics
• 影响因子: 3.2
• 作者: K. Ryczko;G. Sek;J. Misiewicz;F. Langer;S. Höfling;M. Kamp
• 通讯作者: M. Kamp

Verification of band offsets and electron effective masses in GaAsN/GaAs quantum wells: Spectroscopic experiment versus 10-band k·p modeling

GaAsN/GaAs 量子阱中能带偏移和电子有效质量的验证：光谱实验与 10 能带 k·p 建模

• DOI: 10.1063/1.4810920
• 发表时间: 2013
• 期刊: Journal of Applied Physics
• 影响因子: 3.2
• 作者: K. Ryczko;G. Sęk;P. Sitarek;A. Mika;J. Misiewicz;F. Langer;S. Höfling;A. Forchel;M. Kamp
• 通讯作者: M. Kamp