Shaping light at the nanoscale with nanoantennas

在过去的十年里，纳米光子学已经成为光学中最重要的研究领域之一。一个微小的纳米物体扮演着纳米天线的角色：当被光源激发时，它散射周围环境中的光，并可能通过非线性转换将入射辐射转换为不同的波长。本博士项目的范围是设计和制造硅（Si）和氮化硅（SiN）-芯片纳米线和波导，允许在纳米尺度上成形和控制线性和非线性散射场。本课程将设计、制作及测试任意形状的单一奈米元件及奈米元件阵列。除了对奈米光子学有理论上的了解外，博士生将有独特的机会在南安普顿大学最先进的洁净室中学习如何制作及测试这些奈米元件。与布雷西亚大学（意大利）和澳大利亚国立大学合作，这将使博士候选人能够旅行并访问我们的意大利和澳大利亚学术合作伙伴。

In the last decade, nanophotonics has emerged as one of the most important research fields in optics. A tiny nano-object plays the role of a nano-antenna: when excited by a light source, it scatters light in the surrounding environment and may convert the incoming radiation to a different wavelength via nonlinear conversion.The scope of this PhD project is to design and fabricate silicon (Si) and silicon-nitride (SiN) on-chip nanowires and waveguides that allow shaping and controlling the linear and nonlinear scattered field at the nanoscale. Single nano-devices with arbitrary shape as well as arrays of coupled nano-devices will be designed, fabricated and tested.Besides gaining a theoretical understanding on nanophotonics, the PhD candidate will have the unique opportunity to learn how to fabricate and test these nanodevices in the state-of-the-art cleanrooms of the University of Southampton. A collaboration is in place with the University of Brescia (Italy) and the Australian National University, which will allow the PhD candidate to travel and visit our Italian and Australian academic partners.