Photonic Landscape Engineering for Tailor-Made Coherent Emission from Strongly-Coupled Organic and Biological Fluorophores

微腔（MC）提供了一个灵活的操场，研究光子和极化激元色散在一个可调的潜在景观。在垂直MC中，受限光子表现出抛物线色散关系，进而表现出与其他抛物线粒子（如自由电子）相似的行为，尽管具有近似的色散关系。有效质量小10^-5倍，导致非常低的凝结和/或激光阈值。 通过在有机MC内部添加薄夹层，可以观察到红移的光子态，将腔势移动到较低的能量。因此，图案化该薄层使得能够操纵潜在的景观，并在2D和3D中产生极化激元威尔斯和晶格。在这个研究过程中，来自多个势威尔斯的相干耦合发射将被用来展示来自晶格不同点的极化激元的强相互作用以及光在真实的空间中的宏观相干性。通过改变周期性光子线以及正方形和六边形点阵列中的晶格常数，将对激光模式施加显著的控制，从而实现几乎任意的发射角度和模式形状。引入受控缺陷态有望进一步提高强耦合器件的性能。有机染料的有利性质使其在基础和应用研究方面都具有前所未有的可能性。特别地，可以设想高度受控的可调谐极化激元激光器、无色散极化激元有机发光二极管和窄带光电检测器。

Microcavities (MCs) offer a flexible playground to study photon and polariton dispersion in a tunable potential landscape. In vertical MCs, confined photons exhibit a parabolic dispersion relation and in turn behave similarly to other parabolic particles such as free electrons, albeit with an approx. 10^-5 times smaller effective mass, leading to very low condensation and/or lasing thresholds. By adding a thin interlayer inside of an organic MC, one can observe red-shifted photonic states, shifting the cavity potential to lower energies. Consequently, patterning this thin layer enables a manipulation of the potential landscape and creates polariton wells and lattices in 2D and 3D. In the course of this fellowship, coherently coupled emission from multiple potential wells shall be utilized to showcase both the strong interaction of polaritons from different points of the lattice as well as the macroscopic coherence of light in the real space.Accessing the patterning parameters then gives a further degree of freedom in engineering the k-space emission of such microlasers. By changing the lattice constant in periodic photonic wires, as well as square and hexagonal dot arrays, a remarkable control over the lasing modes will be exerted, enabling almost arbitrary emission angles and mode shapes. The incorporation of controlled defect states is expected to further improve the performance of strongly coupled devices. The favourable properties of organic dyes enable a unprecedented scope of possibilites both for fundamental and applied research here. In particular, highly controlled tunable polariton lasers, dispersion-free polariton organic light emitting diodes and narrowband photodetectors can be envisioned.