Pulsed laser deposition of novel active oxide crystals.

该PHD项目旨在解决通过脉冲激光沉积制造高质量单晶波导的挑战，目标是能够利用有源薄膜的应用，例如用于超短激光脉冲的高功率放大器。具体地说，在这个博士项目中，将研究新的增益材料，以实现这些有源薄膜的独特性能，从而提供比目前工业激光市场上可用的激光性能更好的激光性能。PLD技术的一个关键问题是波导中的光学损耗，通常会阻碍有效操作并限制其潜力。在提高薄膜质量方面的新突破将对它们作为下一代混合激光系统设计工具箱中的关键部件的接受程度产生重大影响。在项目结束时，我们将确定将极大地改善PLD生长的晶体薄膜的光学性能的关键工艺，并展示其在光学放大器中的应用。

This PhD project aims to address the challenges of manufacturing high-quality single-crystal waveguides via pulsed laser deposition, targeting applications that can exploit active thin-films, such as high-power amplifiers for ultra-short laser pulses. Specifically, in this PhD project, novel gain materials will be investigated to realise unique properties from these active films, which could provide laser performance beyond what is currently available in the industrial-laser market place. One critical issue of the PLD technique is the optical losses within the waveguides, typically hampering efficient operation and restricting their potential. A new breakthrough in improving the quality of the thin-films will have a major impact in their acceptance as a key component in the design toolbox for next generation hybrid laser systems. At the end of the project we will have identified critical processes that will dramatically improve the optical properties of PLD-grown crystal films and demonstrate their utility for optical amplifiers.