Advanced Photonic Devices and Applications

这项拟议的研究计划的短期目标是开发用于激光显示的无斑点绿色激光器和用于水污染监测的在线病原体传感器。该计划的长期目标是保持麦克马斯特大学徐博士团队在氧化镁：基于PPLN的绿色激光器和基于微型流式细胞仪的传感器研究方面的领先地位，将开发的激光器和传感器应用于激光投影仪、生物成像和在线传感等系统，并探索超出可见波长范围的新的光子材料和器件。 基于激光的显示是显示行业中的一项新兴技术。然而，激光显示器受到激光散斑的影响。研究的第一个主题是开发无斑点激光器，以满足激光显示行业的强烈需求。无斑点绿激光是基于徐博士团队建立的小型化绿色激光平台，具有紧凑型()、低成本(1.5W)和高效率(电光效率10~20%)。 本研究的第二个主题是开发基于微型流式细胞仪的高通量、低检测限的在线病原体传感器，这是水质监测行业的强烈需求。目前检测低浓度病原体的方法依赖于传统的实验室培养增殖法，这种方法通常需要几天的时间才能完成过程，需要复杂的仪器/操作。因此，迫切需要能够快速、准确地检测病原体的在线病原体传感。 拟议的研究计划涉及世界各地的一些热门研究课题，并解决了激光显示和水质监测行业的几个关键问题。由于拟议的研究是基于徐博士团队建立的独特的PPLN激光和微流式细胞仪传感器技术，而无斑点激光和在线病原体传感器的目标规格在其他地方尚未实现，因此可以预期会有许多具有高影响系数的出版物。这将使研究团队在激光和光学传感器领域保持国际领先地位，并广泛应用基于激光的投影和水中病原体的在线监测。它将加强与加拿大和世界各地的光电子公司和研究所的合作，为行业合作伙伴提供高素质的人才，并为加拿大的高科技产业做出贡献。

The short-term objectives of this proposed research program are to develop speckle-free green lasers for laser display and on-line pathogen sensors for water pollution monitoring. The long-term goals of the proposed program are to maintain the leading position of the research on MgO:PPLN based green lasers and mirco-flow cytometry based sensors established in Dr. Xu's group at McMaster University, to apply the developed lasers and sensors to systems such as laser projectors, bio-imaging, and online sensing, and to explore new photonic materials and devices beyond the visible wavelength range. Laser based display is an emerging technology in the display industry. However, laser display suffers from the laser speckle. The first theme of the proposed research is to develop speckle-free lasers to satisfy the strong demand from the laser display industry. The speckle-free green lasers are based on the miniaturized green laser platform established at Dr. Xu's group, which is compact (), low-cost (1.5W), and efficient (EO efficiency 10~20%). The second theme of the proposed research is to develop micro flow cytometer based online pathogen sensors with high throughput and low detection limit, which is strongly demanded in the water quality monitoring industry. The current method to detect low concentrations of pathogens relies on the traditional cultural enrichment method in a lab, which often takes several days to complete the processes and requires intricate instrumentation/operation. Thus, on-line pathogen sensing that can detect pathogens in a fast and accurate manner is strongly demanded. The proposed research program involves some hot research topics around the world and addresses several key issues in laser display and water monitoring industries. Since the proposed research is based on the unique PPLN laser and micro-flow cytometry sensor technologies established in Dr. Xu's group, and the targeted specifications of the speckle-free lasers and online pathogen sensors have not been achieved elsewhere, a number of publications with high impact factor can be expected. It will enable the research team to keep itself as one of the international leading players in the areas of lasers and optical sensors, and wide spread application of the laser based projection and online monitoring of pathogens in water. It will enhance and establish collaborations with photonics companies and institutes in Canada and worldwide, provide industry partners with highly qualified personnel, and contribute to Canadian high-tech industries.