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Open AccessArticle

Second Harmonic Generation from Phase-Engineered Metasurfaces of Nanoprisms

1
Department of Applied Chemistry and Biochemical Engineering, Shizuoka University, 3-5-1 Johoku, Hamamatsu, Shizuoka 432-8561, Japan
2
Optical Sciences Centre and ARC Training Centre in Surface Engineering for Advanced Materials (SEAM), School of Science, Swinburne University of Technology, Hawthorn, VIC 3122, Australia
3
Department of Physics, Electrical and Computer Engineering, Graduate School of Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan
4
Institute of Advanced Sciences, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan
5
World Research Hub Initiative (WRHI), School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1, Ookayama, Meguro-ku, Tokyo 152-8550, Japan
*
Authors to whom correspondence should be addressed.
Micromachines 2020, 11(9), 848; https://doi.org/10.3390/mi11090848
Received: 10 August 2020 / Revised: 1 September 2020 / Accepted: 8 September 2020 / Published: 12 September 2020
(This article belongs to the Special Issue Micro/Nano-surfaces: Fabrication and Applications)
Metasurfaces of gold (Au) nanoparticles on a SiO2-Si substrate were fabricated for the enhancement of second harmonic generation (SHG) using electron beam lithography and lift-off. Triangular Au nanoprisms which are non-centro-symmetric and support second-order nonlinearity were examined for SHG. The thickness of the SiO2 spacer is shown to be an effective parameter to tune for maximising SHG. Electrical field enhancement at the fundamental wavelength was shown to define the SHG intensity. Numerical modeling of light enhancement was verified by experimental measurements of SHG and reflectivity spectra at the normal incidence. At the plasmonic resonance, SHG is enhanced up to ∼3.5 × 103 times for the optimised conditions. View Full-Text
Keywords: metasurfaces; second harmonic generation; phase control; finite difference time domain metasurfaces; second harmonic generation; phase control; finite difference time domain
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MDPI and ACS Style

Mochizuki, K.; Sugiura, M.; Yogo, H.; Lundgaard, S.; Hu, J.; Ng, S.H.; Nishijima, Y.; Juodkazis, S.; Sugita, A. Second Harmonic Generation from Phase-Engineered Metasurfaces of Nanoprisms. Micromachines 2020, 11, 848. https://doi.org/10.3390/mi11090848

AMA Style

Mochizuki K, Sugiura M, Yogo H, Lundgaard S, Hu J, Ng SH, Nishijima Y, Juodkazis S, Sugita A. Second Harmonic Generation from Phase-Engineered Metasurfaces of Nanoprisms. Micromachines. 2020; 11(9):848. https://doi.org/10.3390/mi11090848

Chicago/Turabian Style

Mochizuki, Kanta; Sugiura, Mako; Yogo, Hirofumi; Lundgaard, Stefan; Hu, Jingwen; Ng, Soon H.; Nishijima, Yoshiaki; Juodkazis, Saulius; Sugita, Atsushi. 2020. "Second Harmonic Generation from Phase-Engineered Metasurfaces of Nanoprisms" Micromachines 11, no. 9: 848. https://doi.org/10.3390/mi11090848

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