Broad Spectral Tuning of Ultra-Low Loss Polaritons in a van der Waals Crystal by Intercalation
Javier Taboada-Gutiérrez, Gonzalo Álvarez-Pérez, Jiahua Duan, Weiliang Ma, Kyle Crowley, Iván Prieto, Andrei Bylinkin, Marta Autore, Halyna Volkova, Kenta Kimur… 展开作者
Javier Taboada-Gutiérrez, Gonzalo Álvarez-Pérez, Jiahua Duan, Weiliang Ma, Kyle Crowley, Iván Prieto, Andrei Bylinkin, Marta Autore, Halyna Volkova, Kenta Kimura, Tsuyoshi Kimura, M. -H. Berger, Shaojuan Li, Qiaoliang Bao, Xuan P. A. Gao, Ion Errea, Alexey Nikitin, Rainer Hillenbrand, Javier Martín-Sánchez, Pablo Alonso-González
声子极化激元（Phonon polaritons, PhPs）是光与晶格振动耦合形成的准粒子，极性范德华（van der Waals, vdW）晶体中的PhPs因具有强场局域性、各向异性传播特性以及皮秒量级的超长寿命，有望成为纳米尺度能量调控的候选方案。然而，其光谱范围窄且由材料本身决定的Reststrahlen Band（RB，剩余射线带）缺乏可调性，严重限制了技术应用。本研究证实，在vdW半导体α-V₂O₅中插层Na原子可实现RB的宽光谱偏移，且激发的PhPs表现出超低损耗（寿命为4±1 ps），与未插层晶体中的PhPs（寿命为6±1 ps）相近。我们预期该插层方法可推广至其他vdW晶体，为中红外宽波段PhPs的应用开辟道路。
英文摘要：
Phonon polaritons (PhPs) -- light coupled to lattice vibrations -- in polar van der Waals (vdW) crystals are promising candidates for controlling the flow of energy at the nanoscale due to their strong field confinement, anisotropic propagation, and ultra-long lifetime in the picosecond range \cite{ref1,ref2,ref3,ref4,ref5}. However, the lack of tunability in their narrow and material-specific spectral range -- the Reststrahlen Band (RB) -- severely limits their technological implementation. Here, we demonstrate that the intercalation of Na atoms in the vdW semiconductor $α$-V$_2$O$_5$ enables a broad spectral shift of RBs, and that the PhPs excited exhibit ultra-low losses (lifetime of $4 \pm 1$~ps), similar to PhPs in the non-intercalated crystal (lifetime of $6 \pm 1$ ps). We expect our intercalation method to be applicable to other vdW crystals, opening the door for the use of PhPs in broad spectral bands in the mid-infrared domain.
Fast Programming of In-Plane Hyperbolic Phonon Polariton Optics Through van der Waals Crystals using the Phase-Change Material In3SbTe2
RWTH Aachen University（亚琛工业大学）；Juelich-Aachen Research Alliance (JARA-FIT)（于利希-亚琛研究联盟）；University of Oviedo（奥维耶多大学）；Center of Research on Nanomaterials and Nanotechnology, CINN (CSIC-Universidad de Oviedo)（纳米材料与纳米技术研究中心，CINN（西班牙国家科研委员会-奥维耶多大学））；Istituto Italiano di Tecnologia, Center for Biomolecular Nanotechnologies（意大利理工学院，生物分子纳米技术中心）
Active tuning of highly anisotropic phonon polaritons in van der Waals crystal slabs by gated graphene
University of Oviedo（奥维耶多大学）；Center of Research on Nanomaterials and Nanotechnology, CINN (CSIC-Universidad de Oviedo)（纳米材料与纳米技术研究中心，CINN（CSIC-奥维耶多大学））；Donostia International Physics Center (DIPC)（圣塞巴斯蒂安国际物理中心）；Moscow Institute of Physics and Technology（莫斯科物理与技术学院）；IKERBASQUE, Basque Foundation for Science（伊克尔巴斯基克，巴斯克科学基金会）
Launching of Visible-Range Hyperbolic Polaritons by Gold Nanoantennas in a natural van der Waals crystal
Donostia International Physics Center (DIPC)（多诺西亚国际物理中心）；Department of Physics, University of Oviedo（奥维耶多大学物理系）；Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU)（巴斯克地区大学）；Center of Research on Nanomaterials and Nanotechnology, CINN (CSIC–Universidad de Oviedo)（纳米材料与纳米技术中心，CINN（西班牙国家研究委员会-奥维耶多大学））；IKERBASQUE, Basque Foundation for Science（伊克尔巴斯科奎，巴斯克科学基金会）
Polariton Waveguide Modes in Two-Dimensional Van der Waals Crystals: An Analytical Model and Correlative Scanning Near-Field Optical Microscopy Studies
Local control and lateral nanofocusing of hyperbolic phonon polaritons
Korea Advanced Institute of Science and Technology (KAIST)（韩国科学技术院）；Department of Physics, University of Oviedo（奥维耶多大学物理系）；Donostia International Physics Center (DIPC)（圣塞巴斯蒂安国际物理中心）；Universidad del Pais Vasco/Euskal Herriko Unibertsitatea (UPV/EHU)（巴斯克地区大学）；Department of Biomicrosystem Technology, Korea University（韩国大学生物微系统技术系）；KU-KIST Graduate School of Converging Science and Technology, Korea University（韩基融合科学技术研究生院）；Center of Research on Nanomaterials and Nanotechnology, CINN (CSIC-Universidad de Oviedo)（纳米材料与纳米技术中心（西班牙国家科学研究委员会-奥维耶多大学））；IKERBASQUE, Basque Foundation for Science（伊克尔巴斯科奎，巴斯克科学基金会）
Topologically enhanced optical helicity density in the thermal near field of twisted bilayer van der Waals materials
School of Electrical and Computer Engineering, Georgia Institute of Technology（佐治亚理工学院电气与计算机工程学院）；George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology（佐治亚理工学院乔治·W·伍德拉夫机械工程学院）
Probing mesoscopic nonlocal screening in van der Waals heterostructures with polaritons
Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR)（材料研究工程研究所，科学技术研究局）；Quantum Innovation Centre (Q. InC), Agency for Science, Technology and Research (A*STAR)（量子创新中心，科学技术研究局）；School of Materials Science and Engineering, Nanyang Technological University（南洋理工大学材料科学与工程学院）；Department of Materials Science and Engineering, National University of Singapore（新加坡国立大学材料科学与工程系）；National Key Laboratory of Microwave Photonics & College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics（南京航空航天大学微波光子学国家重点实验室与电子信息学院）；School of Electrical and Electronic Engineering, Nanyang Technological University（南洋理工大学电气与电子工程学院）；Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences（中国科学院上海光学精密机械研究所）；Department of Mechanical Engineering, The Hong Kong Polytechnic University（香港理工大学机械工程系）
Chiral Nonlinear Polaritonics with van der Waals Metasurfaces
Ludwig-Maximilians-Universität München（慕尼黑大学）；Universidade Federal de Pernambuco（伯南布哥联邦大学）；Monash University（莫纳什大学）；Imperial College London（帝国理工学院）；Shubnikov Institute of Crystallography, National Research Centre "Kurchatov Institute"（库尔恰托夫国家研究中心舒比尼科夫晶体学研究所）；National University of Science and Technology ‘MISIS’（国立科技大学 MISIS）；Australian National University（澳大利亚国立大学）
Fritz Haber Institute of the Max Planck Society（马克斯·普朗克学会弗里茨·哈伯研究所）；Freie Universität Berlin（柏林自由大学）；Wuhan National Laboratory for Optoelectronics（武汉光电国家实验室）；Huazhong University of Science and Technology（华中科技大学）；Optics Valley Laboratory（光谷实验室）；Hubei Optical Fundamental Research Center（湖北光学基础研究中心）；Max Born Institute for Nonlinear Optics and Short-Pulse Spectroscopy（马克斯·玻恩非线性光学与短脉冲光谱研究所）；Technische Universität Dresden（德累斯顿工业大学）；Helmholz Zentrum Dresden-Rossendorf（德累斯顿-罗斯多夫亥姆霍兹中心）
Emergence of Propagating Exciton-Polaritons in Hybrid Waveguide-van der Waals Heterostructures
Institute of Physics, University of Rostock（罗斯托克大学物理研究所）；Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenztechnik (FBH)（费迪南德·布劳恩研究所，莱布尼茨高频技术研究所）；Research Center for Materials Nanoarchitectonics, NIMS（日本物质材料研究机构纳米结构材料研究中心）；Research Center for Electronic and Optical Materials, NIMS（日本物质材料研究机构电子光学材料研究中心）
Spatiotemporal Visualization of Long-Range Anisotropic Plasmon Polaritons in Hyperbolic MoOCl2
The University of Chicago（芝加哥大学）；James Franck Institute, The University of Chicago（詹姆斯·弗兰克研究所，芝加哥大学）；Department of Chemistry, The University of Chicago（化学系，芝加哥大学）；Department of Physics, The University of Chicago（物理系，芝加哥大学）
