Silicon Metasurfaces for Third Harmonic Geometric Phase Manipulation and Multiplexed Holography
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影响因子：12.262
DOI码：10.1021/acs.nanolett.9b02844
发表刊物：Nano Letters
摘要：Nonlinear wavefront control is a crucial requirement in realizing nonlinear optical applications with metasurfaces. Numerous aspects of nonlinear frequency conversion and wavefront control have been demonstrated for plasmonic metasurfaces. However, several disadvantages limit their applicability in nonlinear nanophotonics, including high dissipative loss and low optical damage threshold. In contrast, it has been shown that metasurfaces made of high-index dielectrics can provide strong nonlinear responses. Regardless of the recent progress in nonlinear optical processes using all-dielectric nanostructures and metasurfaces, much less advancement has been made in realizing a full wavefront control directly with the generation process. Here, we demonstrate the nonlinear wavefront control for the third-harmonic generation with a silicon metasurface. We use a Pancharatnam-Berry phase approach to encode phase gradients and holographic images on nanostructured silicon metasurfaces. We experimentally demonstrate the polarization-dependent wavefront control and the reconstruction of an encoded hologram at the third-harmonic wavelength with high fidelity. Further, we show that holographic multiplexing is possible by utilizing the polarization states of the third harmonic generation. Our approach eases design and fabrication processes and paves the way to an easy to use toolbox for nonlinear optical wavefront control with all-dielectric metasurfaces.
合写作者：Basudeb Sain,Ruizhe Zhao,Luca Carletti,Bingyi Liu,Lingling Huang,Costantino De Angelis
第一作者：Bernhard Reineke
论文类型：期刊论文
通讯作者：Thomas Zentgraf
论文编号：10.1021/acs.nanolett.9b02844
学科门类：理学
文献类型：J
卷号：19
期号：9
字数：3500
ISSN号：ISSN 1530-6984
是否译文：否
发表时间：2019-10-04
收录刊物：SCI
发布期刊链接：https://pubs.acs.org/doi/10.1021/acs.nanolett.9b02844