Poly-crystalline Thin Films for LASER Applications

这个项目是基于最近的一项发现，该发现报告了无序介质中的激光发射，如多晶氧化锌。这一行为似乎与氧化锌(纤锌矿)材料的结晶学性质有关。利用一种新的沉积工艺，这种薄膜中的缺陷密度、微晶尺寸和宏观取向将被独立控制。这将为研究此类行为的基本基础提供机会。结合这一点，我们将研究类似制备的GaN(纤锌矿)薄膜的结构发展。这项工作还应提供有关基于无序材料的激光器件的潜在性能的实用信息。

This project is based on a recent discovery which reports LASER emission in disordered media such as polycrystalline ZnO. This behaviour appears to be related to the crystallographic properties of ZnO (wurztite) material. Using a novel deposition process the defect density, size of crystallites and macroscopic orientation within such thin films will be controlled independently. This will provide an opportunity to study the fundamental basis of such behaviour. In conjunction with this the development of structure in similarly produced GaN (wurztite) films will be examined. This work should also provide practical information concerning the potential performance of LASER devices based on disordered materials.