当前位置：
X-MOL 学术
›
ACS Photonics
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Coherence and Interaction in Confined Room-Temperature Polariton Condensates with Frenkel Excitons
ACS Photonics ( IF 6.5 ) Pub Date : 2020-01-10 , DOI: 10.1021/acsphotonics.9b01300 Simon Betzold 1 , Marco Dusel 1 , Oleksandr Kyriienko 2, 3 , Christof P. Dietrich 1 , Sebastian Klembt 1 , Jürgen Ohmer 4 , Utz Fischer 4 , Ivan A. Shelykh 3, 5 , Christian Schneider 1 , Sven Höfling 1, 6
ACS Photonics ( IF 6.5 ) Pub Date : 2020-01-10 , DOI: 10.1021/acsphotonics.9b01300 Simon Betzold 1 , Marco Dusel 1 , Oleksandr Kyriienko 2, 3 , Christof P. Dietrich 1 , Sebastian Klembt 1 , Jürgen Ohmer 4 , Utz Fischer 4 , Ivan A. Shelykh 3, 5 , Christian Schneider 1 , Sven Höfling 1, 6
Affiliation
|
Strong light–matter coupling of a photon mode to tightly bound Frenkel excitons in organic materials has emerged as a versatile, room-temperature platform to study nonlinear many-particle physics and bosonic condensation. However, various aspects of the optical response of Frenkel excitons in this regime remained largely unexplored. Here, a hemispheric optical cavity filled with the fluorescent protein mCherry is utilized to address two important questions. First, combining the high quality factor of the microcavity with a well-defined mode structure allows to address whether temporal coherence in such systems can be competitive with their low-temperature counterparts. To this end, a coherence time greater than 150 ps is evidenced via interferometry, which exceeds the polariton lifetime by 2 orders of magnitude. Second, the narrow line width of the device allows to reliably trace the emission energy of the condensate with increasing particle density and thus to establish a fundamental picture that quantitatively explains the core nonlinear processes. It is found that the blue-shift of the Frenkel exciton–polaritons is largely dominated by the reduction of the Rabi splitting due to phase space filling effects, which is influenced by the redistribution of polaritons in the system. The highly coherent emission at ambient conditions establishes organic materials as a promising active medium in room-temperature polariton lasers, and the detailed insights on the nonlinearity are of great benefit toward implementing nonlinear polaritonic devices, optical switches, and lattices based on exciton–polaritons at room temperature.
中文翻译：
Frenkel激子在密闭室温极化子冷凝物中的相干和相互作用
光子模式与有机材料中紧密结合的Frenkel激子的强光-质耦合已经成为一种多功能的室温平台，用于研究非线性多粒子物理学和玻色子凝聚。但是，在这种情况下，Frenkel激子的光学响应的各个方面仍未得到充分探索。在这里，一个充满荧光蛋白mCherry的半球光学腔被用来解决两个重要的问题。首先，将微腔的高质量因数与明确定义的模式结构结合起来，可以解决此类系统中的时间相干性是否可以与低温系统相抗衡的问题。为此，通过干涉测量法证明了相干时间大于150 ps，该相干时间比极化子寿命超出了两个数量级。第二，装置的窄线宽允许随着颗粒密度的增加可靠地追踪冷凝水的排放能量，从而建立定量描述核心非线性过程的基本图。我们发现，由于相空间填充效应，Frenkel激子-极化子的蓝移在很大程度上由Rabi分裂的减少所决定，这受极化子在系统中的重新分布的影响。在环境条件下的高度相干发射使有机材料成为室温极化子激光器中一种有希望的活性介质，对非线性的详细了解对于实现非线性极化子设备，光学开关和基于激子极化子的晶格非常有用。室内温度。
更新日期：2020-01-10
中文翻译：
Frenkel激子在密闭室温极化子冷凝物中的相干和相互作用
光子模式与有机材料中紧密结合的Frenkel激子的强光-质耦合已经成为一种多功能的室温平台，用于研究非线性多粒子物理学和玻色子凝聚。但是，在这种情况下，Frenkel激子的光学响应的各个方面仍未得到充分探索。在这里，一个充满荧光蛋白mCherry的半球光学腔被用来解决两个重要的问题。首先，将微腔的高质量因数与明确定义的模式结构结合起来，可以解决此类系统中的时间相干性是否可以与低温系统相抗衡的问题。为此，通过干涉测量法证明了相干时间大于150 ps，该相干时间比极化子寿命超出了两个数量级。第二，装置的窄线宽允许随着颗粒密度的增加可靠地追踪冷凝水的排放能量，从而建立定量描述核心非线性过程的基本图。我们发现，由于相空间填充效应，Frenkel激子-极化子的蓝移在很大程度上由Rabi分裂的减少所决定，这受极化子在系统中的重新分布的影响。在环境条件下的高度相干发射使有机材料成为室温极化子激光器中一种有希望的活性介质，对非线性的详细了解对于实现非线性极化子设备，光学开关和基于激子极化子的晶格非常有用。室内温度。
京公网安备 11010802027423号