Second harmonic generation in modal phase-matched AlGaAs-on-insulator waveguides [PDF]
EPJ Web of Conferences, 2023 We utilize modal phase matching and type-I configuration to achieve second harmonic generation in AlGaAs-on-insulator waveguides. We demonstrate an overall normalized conversion efficiency of 200% W-1 cm-2 at a pump wavelength of 1587 nm in a 1-mm-long ...
Lu Xinda +4 more
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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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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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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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Second harmonic generation in colloidal CdSe/CdS nanoplatelets
Results in Physics, 2020 In this Letter, we report the second harmonic generation (SHG) in a colloidal solution of CdSe/CdS nanoplatelets (NPLs) in the case of two-photon excitation in the region of exciton transition from the light holes sub-band to the conduction sub-band (549
I.D. Laktaev +4 more
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Second Harmonic Generation from Phase-Engineered Metasurfaces of Nanoprisms
Micromachines, 2020 Metasurfaces of gold (Au) nanoparticles on a SiO2-Si substrate were fabricated for the enhancement of second harmonic generation (SHG) using electron beam lithography and lift-off.
Kanta Mochizuki +8 more
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Second harmonic generation from GaAs-Au subwavelength relief gratings
Results in Physics, 2022 We study numerically the second-harmonic generation (SHG) from subwavelength GaAs relief gratings with and without Au nano-stripes on the bottom of grating troughs.
C.J. Valencia-Caicedo +2 more
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Vertical Second Harmonic Generation in Asymmetric Dielectric Nanoantennas
IEEE Photonics Journal, 2020 High-permittivity III–V semiconductor nanocavities have shown huge potential for enhanced nonlinear light–matter interactions at the nanoscale. In particular, Second Harmonic (SH) generation in AlGaAs nanoantennas can be extremely efficient;
Davide Rocco +6 more
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Second harmonic generation from the `centrosymmetric' crystals
IUCrJ, 2015 Second harmonic generation (SHG) is a well known non-linear optical phenomena which can be observed only in non-centrosymmetric crystals due to non-zero hyperpolarizability.
Venkatram Nalla +6 more
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