article published yes Bingyi Liu author Basudeb Sain author Bernhard Reineke author Ruizhe Zhao author Cedrik Meier author 20798https://orcid.org/0000-0002-3787-3572 Lingling Huang author Yongyuan Jiang author Thomas Zentgraf author 305250000-0002-8662-1101 15 department 230 department 289 department TRR 142 project TRR 142 - Project Area C project TRR 142 - Subproject C5 project Nonlinear Pancharatnam–Berry phase metasurfaces facilitate the nontrivial phase modulation for frequency conversion processes by leveraging photon‐spin dependent nonlinear geometric‐phases. However, plasmonic metasurfaces show some severe limitation for nonlinear frequency conversion due to the intrinsic high ohmic loss and low damage threshold of plasmonic nanostructures. Here, the nonlinear geometric‐phases associated with the third‐harmonic generation process occurring in all‐dielectric metasurfaces is studied systematically, which are composed of silicon nanofins with different in‐plane rotational symmetries. It is found that the wave coupling among different field components of the resonant fundamental field gives rise to the appearance of different nonlinear geometric‐phases of the generated third‐harmonic signals. The experimental observations of the nonlinear beam steering and nonlinear holography realized in this work by all‐dielectric geometric‐phase metasurfaces are well explained with the developed theory. This work offers a new physical picture to understand the nonlinear optical process occurring at nanoscale dielectric resonators and will help in the design of nonlinear metasurfaces with tailored phase properties. https://ris.uni-paderborn.de/download/16197/16202/adom.201902050.pdf application/pdf Wiley2020 eng 2195-107110.1002/adom.201902050 89 B. Liu <i>et al.</i>, “Nonlinear Wavefront Control by Geometric-Phase Dielectric Metasurfaces: Influence of Mode Field and Rotational Symmetry,” <i>Advanced Optical Materials</i>, vol. 8, no. 9, 2020. Liu, B., Sain, B., Reineke, B., Zhao, R., Meier, C., Huang, L., … Zentgraf, T. (2020). Nonlinear Wavefront Control by Geometric-Phase Dielectric Metasurfaces: Influence of Mode Field and Rotational Symmetry. <i>Advanced Optical Materials</i>, <i>8</i>(9). <a href="https://doi.org/10.1002/adom.201902050">https://doi.org/10.1002/adom.201902050</a> Liu, Bingyi, et al. “Nonlinear Wavefront Control by Geometric-Phase Dielectric Metasurfaces: Influence of Mode Field and Rotational Symmetry.” <i>Advanced Optical Materials</i>, vol. 8, no. 9, 1902050, Wiley, 2020, doi:<a href="https://doi.org/10.1002/adom.201902050">10.1002/adom.201902050</a>. @article{Liu_Sain_Reineke_Zhao_Meier_Huang_Jiang_Zentgraf_2020, title={Nonlinear Wavefront Control by Geometric-Phase Dielectric Metasurfaces: Influence of Mode Field and Rotational Symmetry}, volume={8}, DOI={<a href="https://doi.org/10.1002/adom.201902050">10.1002/adom.201902050</a>}, number={91902050}, journal={Advanced Optical Materials}, publisher={Wiley}, author={Liu, Bingyi and Sain, Basudeb and Reineke, Bernhard and Zhao, Ruizhe and Meier, Cedrik and Huang, Lingling and Jiang, Yongyuan and Zentgraf, Thomas}, year={2020} } B. Liu, B. Sain, B. Reineke, R. Zhao, C. Meier, L. Huang, Y. Jiang, T. Zentgraf, Advanced Optical Materials 8 (2020). Liu B, Sain B, Reineke B, et al. Nonlinear Wavefront Control by Geometric-Phase Dielectric Metasurfaces: Influence of Mode Field and Rotational Symmetry. <i>Advanced Optical Materials</i>. 2020;8(9). doi:<a href="https://doi.org/10.1002/adom.201902050">10.1002/adom.201902050</a> Liu, Bingyi, Basudeb Sain, Bernhard Reineke, Ruizhe Zhao, Cedrik Meier, Lingling Huang, Yongyuan Jiang, and Thomas Zentgraf. “Nonlinear Wavefront Control by Geometric-Phase Dielectric Metasurfaces: Influence of Mode Field and Rotational Symmetry.” <i>Advanced Optical Materials</i> 8, no. 9 (2020). <a href="https://doi.org/10.1002/adom.201902050">https://doi.org/10.1002/adom.201902050</a>. 161972020-02-28T17:29:17Z2022-01-06T06:52:45Z