Second harmonic generation(SHG)in optical materials serves as important techniques for laser source gen-erations in awkward spectral ranges,physical identities of materials in crystalline symmetry and interfacial configuration.Here,we present a comprehensive review on SHGs in nanowires(NWs),which have been recog-nized as an important element in constructing photonic and optoelectronic devices with compact footprint and high quantum yield.Relying on NW's one-dimensional geometry,its SHG could be employed as a sophisticated spectroscopy to determine the crystal phase and orientation,as well as the internal strain.The enhancements of SHG efficiency in NWs are discussed then,which were realized by hybrid integrating them with two-dimensional materials,nanophotonic and plasmonic structures.Finally,the potential applications of NW SHGs are concluded,including the areas of optical correlators and constructions of on-chip nano-laser sources.
赵璧君、赵建林、甘雪涛
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Microelectronics and Nanoelectronics Department,School of Microelectronics,Northwestern Polytechnical University,Xi'an 710072,China
Key Laboratory of Light Field Manipulation and Information Acquisition,Ministry of Industry and Information Technology,and Shaanxi Key Laboratory of Optical Information Technology,School of Physical Science and Technology,Northwestern Polytechnical University,Xi'an 710072,China
Key Research and Development ProgramNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaShaanxi Fundamental Science Research Project for Mathematics and PhysicsXi'an Science and Technology Plan Project
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