期刊
NANOTECHNOLOGY
卷 28, 期 11, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1361-6528/aa5645
关键词
optical antennas; metamaterials; second harmonic generation
资金
- Erasmus Mundus NANOPHI project [2013 5659/002-001]
- CARIPLO (SHAPES-Second-HArmonic Plasmon-Enhanced Sensing)
- 'Double Culture' PhD Grant of Sorbonne Paris Cite
- ESPRC (UK)
- ERC iPLASMM project [321268]
- Royal Society
- Wolfson Foundation
- Engineering and Physical Sciences Research Council [EP/J015393/1, EP/M013812/1] Funding Source: researchfish
- EPSRC [EP/M013812/1, EP/J015393/1] Funding Source: UKRI
We review recent achievements in the field of nanoscale nonlinear AlGaAs photonics based on all-dielectric optical antennas. After discussing the motivation and main technological challenges for the development of an AlGaAs monolithic platform for chi((2)) nonlinear nanophotonics, we present numerical and experimental investigations of the second-order nonlinear response and physical reasons for high efficiency of second-order nonlinear interactions in the AlGaAs nanoantennas. In particular, we emphasize the role of the dipolar resonances at the fundamental frequency and the multipolar resonances at the second harmonic wavelength. We also discuss second-harmonic generation directionality and show possible strategies to engineer the radiation pattern of nonlinear antennas.
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