Two-dimensional photonic crystals based on decorated microreplicated plastic substrates

本研究计画的目标是设计与制作基于表面浮凸光栅结构的新型光子晶体。使用全息曝光技术，将定义2D横向结构。基本单元的晶格结构和设计将变化。这些表面浮雕光栅，然后将被用作基板的装饰与高折射率的电介质材料，将通过倾斜蒸发技术沉积。作为附加工具，胶体颗粒将沉积在表面浮雕光栅上用于横向图案化和/或引入缺陷。改性的表面浮雕结构将被涂覆有活性有机半导体，如共轭聚合物。因此，我们将研制和研究以有机半导体为有源增益介质的新型光子晶体激光源。实验工作将直接伴随着理论工作。我们的工作将主要解决以下问题：- 具有任意晶格结构的2D表面浮雕光栅的设计和光子带结构-用于表面浮雕光栅制造的全息曝光和倾斜蒸发的限制因素的评估-使用有机半导体的2D光子晶体激光器的设计和发射特性-具有高折射率的2D光子晶体激光器中的激光操作理论-和增益调制。这项研究将由一个相互作用的团体联盟进行，这些团体将他们在材料科学，光电子学和理论量子电子学领域的专业知识引入其中。

The goal of this research project is the design and the fabrication of novel photonic crystals based on surface-reliefgrating structures. Using the technique of holographic exposure 2D lateral structures will be defined. The lattice structure and the design of the elementary cell will be varied. These surface relief gratings will then be used as substrates for the decoration with high-index dielectric materials that will be deposited by the technique of oblique evaporation. As an additional tool, colloidal particles will be deposited on surface relief gratings for lateral patterning and/or the introduction of defects. The modified surface-relief structures will be coated with active organic semiconductors such as conjugated polymers. Thus novel photonic crystal laser sources using organic semiconductors as active gain medium will be fabricated and investigated. The experimental work will be directly accompanied by theoretical work. Our work will mainly address the following issues: - Design and photonic bandstructures of 2D surface relief gratings with arbitrary lattice structures - Evaluation of the limiting factors of holographic exposure and oblique evaporation for the fabrication of surface relief gratings - Design and emission properties of 2D photonic crystal lasers using organic semiconductors - Theory of laser operation in a 2D photonic crystal lasers with high index- and gainmodulation. The research will be carried out by a strongly interacting consortium of groups that bring in their expertise in the field of materials science, optoelectronics and theoretical quantum electronics.