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20 October 2021 Enhanced high harmonic and terahertz generation from LiNaO3 metasurface
Yanyun Tu, Xu Sun, Haizhong Wu, Zhihui Lyu, Dongwen Zhang, Zengxiu Zhao, Jianmin Yuan
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Proceedings Volume 11906, Infrared, Millimeter-Wave, and Terahertz Technologies VIII; 1190603 (2021) https://doi.org/10.1117/12.2601378
Event: SPIE/COS Photonics Asia, 2021, Nantong, JS, China
Abstract
All-dielectric metasurfaces exhibit high damage thresholds and strong enhancement of the driving field, making them attractive platforms to Terahertz generation at the nanoscale. Here we report terahertz electric field from lithium niobate metasurface is enhanced by more than one order of magnitude compared to unpatterned samples. The enhanced terahertz are highly anisotropic with respect to the excitation polarization and are selective by the excitation wavelength due to its resonant features. By combining nanofabrication technology and ultrafast optics, our work paves the way for the design of new compact terahertz photonic devices that operate under high intensities and at short wavelengths.
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Yanyun Tu, Xu Sun, Haizhong Wu, Zhihui Lyu, Dongwen Zhang, Zengxiu Zhao, and Jianmin Yuan "Enhanced high harmonic and terahertz generation from LiNaO3 metasurface", Proc. SPIE 11906, Infrared, Millimeter-Wave, and Terahertz Technologies VIII, 1190603 (20 October 2021); https://doi.org/10.1117/12.2601378
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KEYWORDS
Terahertz radiation
Crystals
Nonlinear crystals
Polarization
Nanostructures
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