石墨烯与层状材料在光子学与光电子学领域展现出巨大潜力。在这些领域中，它们的光学与电学特性得以充分结合，并且石墨烯无带隙的特点亦可转化为优势。石墨烯中狄拉克电子的线性色散关系，使其能够实现超宽谱带的可调谐性，以及通过栅压调控、在超宽带宽内实现三次谐波增强，这为光通信与信号处理领域所需的电可调宽带频率转换器开辟了道路。由于泡利阻塞效应，石墨烯中可观察到可饱和吸收现象，该特性可被用于实现多种超快与宽带激光器的锁模运作。石墨烯集成光子学为下一代数据通信与电信中所需的调制器、探测器和开关的晶圆级制造提供了一个平台。这些功能可通过将石墨烯层置于作为无源光波导的光波导顶端来实现，从而简化现有技术。基于多种原子晶体的异质结构，其性质既不同于其单一组成成分，也不同于其三维体材料。将这些晶体以堆叠方式组合，可用于设计此类异质结构的功能，并应用于新型发光器件中，例如单光子发射器和可调谐发光二极管。
Graphene and layered materials have great potential in photonics and optoelectronics, where the combination of their optical and electronic properties can be fully exploited, and the absence of a bandgap in graphene can be beneficial. The linear dispersion of the Dirac electrons in graphene enables ultra-wide-band tunability as well as gate controllable third-harmonic enhancement over an ultra-broad bandwidth, paving the way for electrically tuneable broadband frequency converters for optical communications and signal processing. Saturable absorption is observed as a consequence of Pauli blocking and can be exploited for mode-locking of a variety of ultrafast and broadband lasers. Graphene integrated photonics is a platform for wafer scale manufacturing of modulators, detectors and switches for next generation datacom and telecom. These functions can be achieved with graphene layers placed on top of optical waveguides, acting as passive light-guides, thus simplifying the current technology. Heterostructures based on layers of atomic crystals have properties different from those of their individual constituents and of their three dimensional counterparts. The combinations of such crystals in stacks can be used to design the functionalities of such heterostructures, that can be exploited in novel light emitting devices, such as single photon emitters, and tuneable light emitting diodes.

嘉宾介绍

Andrea Ferrari

英国皇家工程院院士

演讲主题：

剑桥大学石墨烯研究中心创始人兼主任、纳米技术教授，欧盟石墨烯旗舰计划执行委员会主席，英国皇家学会沃尔夫森奖获得者，英国皇家工程院院士。作为石墨烯及二维材料研究领域的国际权威，他聚焦石墨烯、碳纳米管、类金刚石碳及纳米线在电子与光子器件中的应用研究，主导了剑桥大学石墨烯研究中心在医疗健康、量子技术、6G通信等前沿领域的科研布局。在《Science》《Nature Nanotechnology》《Nature Materials》《Nature Photonics》等顶级期刊发表论文260余篇，论文总被引超63,000次，H因子达92。并担任《Scientific Reports》《Carbon》《ACS Nano》《Nanoscale》等国际期刊编辑，并荣获包括ACS Nano Award Lectureship、Charles E. Pettinos Award、European Research Council Synergy Award在内的多项国际学术荣誉，2020年获北京市科学技术奖“国际合作中关村奖”，2023年荣获中华人民共和国国际科学技术合作奖。
He is Professor of Nanotechnology and the founding Director of the Cambridge Graphene Centre at the University of Cambridge. He serves as the Chair of the Executive Board of the European Graphene Flagship initiative. A recognized leader in the field of graphene and two-dimensional materials, he is a Fellow of the Royal Academy of Engineering and a recipient of the Royal Society Wolfson Research Merit Award. His research focuses on the applications of graphene, carbon nanotubes, diamond-like carbon, and nanowires in electronic and photonic devices. Under his leadership, the Cambridge Graphene Centre has established strategic research initiatives in healthcare, quantum technology, and 6G communications. He has published over 260 papers in leading journals such as Science, Nature Nanotechnology, Nature Materials, and Nature Photonics, which have received more than 63,000 citations and an H-index of 92. He serves on the editorial boards of Scientific Reports, Carbon, ACS Nano, and Nanoscale, among others. His numerous honors include the ACS Nano Award Lectureship, the Charles E. Pettinos Award, and the European Research Council Synergy Award.