Mid Infrared Nonlinear Plasmonics using Germanium Nanoantennas on Silicon Substrates
Marco P. Fischer, Aaron Riede, Kevin Gallacher, Jacopo Frigerio, Giovanni Pellegrini, Michele Ortolani, Douglas J. Paul, Giovanni Isella, Alfred Leitenstorfer, … 展开作者
Marco P. Fischer, Aaron Riede, Kevin Gallacher, Jacopo Frigerio, Giovanni Pellegrini, Michele Ortolani, Douglas J. Paul, Giovanni Isella, Alfred Leitenstorfer, Paolo Biagioni, Daniele Brida
We demonstrate third harmonic generation in plasmonic antennas made of highly doped germanium and designed to be resonant in the mid infrared. Owing to the near-field enhancement, the result is an ultrafast, sub-diffraction, coherent light source tunable between 3 and 5 micrometer wavelength on a silicon substrate. To observe nonlinearity in this challenging spectral region, a high-power femtosecond laser system equipped with parametric frequency conversion in combination with an all-reflective confocal microscope setup is employed. We show spatially resolved maps of the linear scattering cross section and the nonlinear emission of single isolated antenna structures. A clear third order power dependence as well as the mid-infrared emission spectra prove the nonlinear nature of the light emission. Simulations support the observed resonance length of the double rod antenna and demonstrate that the field enhancement inside the antenna material is responsible for the nonlinear frequency mixing.
Sel-assembled Rhodium Nanoantennas for Single-Protein UV SERS
Zhejiang University（浙江大学）；University of Fribourg（弗里堡大学）；Elettra Sincrotrone Trieste S.C.p.A.（的里雅斯特电 synchrotron 有限责任公司）；Zhejiang University of Technology（浙江工业大学）；Duke University（杜克大学）；Istituto Italiano di Tecnologia（意大利理工学院）；Università degli Studi di Modena e Reggio Emilia（摩德纳和雷焦艾米利亚大学）；Aix Marseille Univ, CNRS, Centrale Marseille, Institut Fresnel（艾克斯-马赛大学、法国国家科学研究中心、马赛中央理工学院、费斯ネル研究所）；China Jiliang University（中国计量大学）
Active tuning of ENZ resonances in meta-antenna through phase modulation of optical pulse
Institute of Nuclear Sciences, Hacettepe University（哈杰泰普大学核科学研究所）；Department of Nanotechnology and Nanomedicine, Graduate School of Science and Engineering, Hacettepe University（哈杰泰普大学理科学院纳米技术与纳米医学系）；Department of Physics, Akdeniz University（安塔利亚地中海大学物理系）；Türkiye National Observatories, TUG（土耳其国家天文台）；Department of Nanoscience and Nanotechnology, Faculty of Arts and Science, Burdur Mehmet Akif Ersoy University（布尔杜尔穆罕默德阿基夫埃尔索伊大学文理学院纳米科学与纳米技术系）
