物理
谐波
超短脉冲
高次谐波产生
激发
纳米光刻
光子学
电介质
极化(电化学)
光电子学
波长
谐波
激光器
光学
制作
物理化学
病理
电压
化学
替代医学
医学
量子力学
作者
Hanzhe Liu,Cheng Guo,Giulio Vampa,Jingyuan Linda Zhang,Tomás Sarmiento,Meng Xiao,P. H. Bucksbaum,Jelena Vučković,Shanhui Fan,David A. Reis
出处
期刊:Nature Physics
[Springer Nature]
日期:2018-08-06
卷期号:14 (10): 1006-1010
被引量:239
标识
DOI:10.1038/s41567-018-0233-6
摘要
The recent observation of high-harmonic generation from solids creates a new possibility for engineering fundamental strong-field processes by patterning the solid target with subwavelength nanostructures. All-dielectric metasurfaces exhibit high damage thresholds and strong enhancement of the driving field, making them attractive platforms to control high harmonics and other high-field processes at the nanoscale. Here we report enhanced non-perturbative high-harmonic emission from a Fano-resonant Si metasurface that possesses a classical analogue of electromagnetically induced transparency. The harmonic emission is enhanced by more than two orders of magnitude compared to unpatterned samples. The enhanced high harmonics 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 strong-field physics, our work paves the way for the design of new compact ultrafast photonic devices that operate under high intensities and at short wavelengths. The demonstration of substantially enhanced high-harmonic emission from a silicon metasurface suggests a route towards novel photonic devices based on a combination of ultrafast strong-field physics and nanofabrication technology.
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