Second‐Harmonic Generation in Strained Silicon Metasurfaces
Advanced Photonics Research, 2022 Dielectric metasurfaces supporting Mie resonances can allow significantly boosted and tailored nonlinear light–matter interactions at the nanoscale. However, nonlinear dielectric metasurfaces typically only have odd‐order nonlinearities, unless resorting
Yun Zhao +6 more
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Research Paper: Compensation of Thermal Phase Mismatch Effects in The High Power Second Harmonic Generation Using a Chirped Periodically Poled Non-linear Crystal [PDF]
فیزیک کاربردی ایران, 2022 Thermal effects strongly influence the process of second harmonic generation, especially at high fundamental powers. The generation of non-uniform temperature distribution in the crystal due to the absorption of fundamental and second harmonic waves ...
Saeed Ghavami Sabouri
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Deciphering second harmonic generation signals
Chemical Science, 2021 Second harmonic generation is one of the most powerful techniques used to selectively probe interfaces of all types. The direct ab initio method developed here allows predicting the signal and highlights the importance of local and non-local effects.
Foucaud, Y. +6 more
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Second Harmonic Generation in Generalized Ferroelectric Superlattices [PDF]
Integrated Ferroelectrics, 2021 The goal of the work presented in this investigation is to achieve the efficient parametric interaction of narrow beams (in particular second harmonic generation) using a nonlinear (ferroelectric-LiTaO3) photonic crystal tuned to self-collimation (nondiffractive) regimes.
Ozer, Z. +3 more
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Second-harmonic generation in etchless lithium niobate nanophotonic waveguides with bound states in the continuum [PDF]
Conference on Lasers and Electro-Optics, 2021 We experimentally demonstrated second-harmonic generation from telecom to near-visible wavelengths on an etchless lithium niobate platform by using a photonic bound state in the continuum for the second-harmonic mode.
F. Ye, Yue Yu, Xiang Xi, Xiankai Sun
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Second harmonic generation in amorphous silicon-on-silica metamaterial
APL Photonics, 2021 We demonstrate second harmonic generation by using an amorphous silicon metamaterial fabricated on the tip of an optical fiber that collects the generated light.
Jie Xu +3 more
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Nature Communications, 2021 Metasurfaces have provided a promising approach to enhance the nonlinearity at subwavelength scale, but usually suffer from a narrow bandwidth as imposed by sharp resonant features. Here, we counterintuitively report a broadband, enhanced second-harmonic
Junhao Li +13 more
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Continuous Wave Second Harmonic Generation Enabled by Quasi-Bound-States in the Continuum on Gallium Phosphide Metasurfaces. [PDF]
Nano letters (Print), 2020 Resonant metasurfaces are an attractive platform for enhancing the nonlinear optical processes, such as second harmonic generation (SHG), since they can generate large local electromagnetic fields while relaxing the phase-matching requirements.
A. Anthur +7 more
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Efficient photo-induced second harmonic generation in silicon nitride photonics [PDF]
Nature Photonics, 2020 Silicon photonics lacks a second-order nonlinear optical (χ(2)) response in general, because the typical constituent materials are centrosymmetric and lack inversion symmetry, which prohibits χ(2) nonlinear processes such as second-harmonic generation ...
Xiyuan Lu +4 more
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Second harmonic generation enhancement by polarization-matched nanostructures -INVITED [PDF]
EPJ Web of Conferences, 2020 Frequency conversion plays an important role in both fundamental and applied nano-optics. Doubling the frequency of light by second harmonic generation (SHG) is a vital process e.g. in laser optics or high-resolution microscopy.
Dreser Christoph +10 more
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