Materials World Network: Complex Oxides for Heterogeneous Optoelectronic Integration

材料世界网：用于异质光电集成的复杂氧化物

• 批准号: 1210818
• 负责人: Bethanie Stadler
• 金额: $ 15万
• 依托单位: University of Minnesota-Twin Cities
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-08-15 至 2014-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1210818&HistoricalAwards=false
• 关键词: Materials; World; Network; Complex; Oxides

TECHNICAL SUMMARY: This US-UK Materials World Network collaboration focuses on adding magneto-optical (MO) and electro-optical (EO) properties that are orders of magnitude greater than currently available to semiconductor photonics by integrating both doped yttrium iron garnet and lithium niobate, respectively, onto III-V structures. With motivations such as source-integrated photonic integrated circuits and electronically-reconfigurable opto-electronic integrated circuits, there has been intense work on adding MO and EO materials to semiconductor platforms. However, complex oxide integration requires thermal crystallization methods together with thermal expansion mismatch, substrate dissociation, and interfacial diffusion. This work aims to converge on a solution involving controlled strain and interfaces using buffer layers and seed layers (both ~10 nm), oxide patterning, and rapid thermal annealing for minimized thermal treatment. Subsequent doping in thicker films is used to meet specifications of maximized MO or EO activity. The optical, magnetic, and electronic properties are characterized to analyze the both the structures and compositions, and the materials performance is tested on carefully designed waveguide structures. In the case of MO integration, non-reciprocity is expected to be realized without the high-power options. Integrated ferroelectric oxides also unlocks doors to EO functionality in both near and long term applications, such as active frequency modulation and reconfigurable photonics.NON-TECHNICAL SUMMARY: This research project is a collaboration between US and UK scientists. The research focuses on integration of magneto-optical and electro-optical materials with semiconductor materials, opening doors for novel properties such as enhanced magneto-optical activity and new devices such as photonic isolators so that optical sources can be integrated with photonic integrated circuits. The team meets online with tools that enable attendees to see each other's faces, writings and slides, and to hear each other's voices. The pedagogy of these tools will be an interesting side study. In addition, students exchange time in each other's lab to gain important experience with new cultures and new science. It is anticipated that the online/exchange interaction model developed here in international research will be extended to US-Kenya and UK-Pakistan collaborations in the future - building on relationships that are already underway. This project is supported by the Electronic and Photonic Materials program and Office of Special Programs, Division of Materials Research.

技术概要：这项美国-英国材料世界网络合作的重点是通过将掺杂的钇铁石榴石和钛酸锂分别集成到III-V结构上，增加比目前半导体光子学大几个数量级的磁光（MO）和电光（EO）特性。在诸如源集成光子集成电路和电子可重构光电集成电路的动机下，在将MO和EO材料添加到半导体平台上已经进行了大量的工作。然而，复合氧化物集成需要热结晶方法以及热膨胀失配、衬底解离和界面扩散。这项工作的目的是集中在一个解决方案，涉及控制应变和界面使用缓冲层和种子层（均为~10 nm），氧化物图案化，并快速热退火最小化热处理。随后在较厚的膜中掺杂用于满足最大化MO或EO活性的规格。光学，磁性和电子性能的特点，分析的结构和成分，并仔细设计的波导结构上的材料性能进行了测试。在MO集成的情况下，预期在没有高功率选项的情况下实现非互易性。集成铁电氧化物还在近期和长期应用中打开了EO功能的大门，例如有源频率调制和可重构光子学。非技术摘要：该研究项目是美国和英国科学家之间的合作。研究重点是磁光和电光材料与半导体材料的集成，为增强磁光活性等新特性和光子隔离器等新器件打开大门，以便光源可以与光子集成电路集成。该团队使用工具在线开会，使与会者能够看到彼此的面孔、文字和幻灯片，并听到彼此的声音。这些工具的教学方法将是一个有趣的侧面研究。此外，学生们在彼此的实验室交换时间，以获得新文化和新科学的重要经验。预计在国际研究中开发的在线/交流互动模式将在未来扩展到美国-肯尼亚和英国-巴基斯坦的合作-建立已经在进行中的关系。该项目由电子和光子材料计划和材料研究部特别计划办公室支持。