Enhanced tunable second harmonic generation from twistable interfaces and vertical superlattices in boron nitride homostructures [PDF]
Science Advances, 2020 Nonlinear optical response from a van der Waals interface is modulated and enhanced in twistable boron nitride homostructures. Broken symmetries induce strong even-order nonlinear optical responses in materials and at interfaces.
K. Yao +19 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
doaj +1 more source
Giant nonreciprocal second-harmonic generation from antiferromagnetic bilayer CrI3 [PDF]
Nature, 2019 Layered antiferromagnetism is the spatial arrangement of ferromagnetic layers with antiferromagnetic interlayer coupling. The van der Waals magnet chromium triiodide (CrI3) has been shown to be a layered antiferromagnetic insulator in its few-layer form1,
Zeyuan Sun +16 more
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Second-harmonic generation and the conservation of spatiotemporal orbital angular momentum of light [PDF]
Nature Photonics, 2020 Light with spatiotemporal orbital angular momentum (ST-OAM) is a recently discovered type of structured and localized electromagnetic field. This field carries characteristic space–time spiral phase structure and transverse intrinsic OAM.
Guan Gui +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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Second harmonic generation in graphene [PDF]
JETP Letters, 2011 5 pages, 3 ...
openaire +2 more sources
Second-harmonic generation of spatiotemporal optical vortices and conservation of orbital angular momentum [PDF]
Optica, 2020 Spatiotemporal optical vortices (STOVs) are a new type of intrinsic optical orbital angular momentum (OAM) structure in which the OAM vector is orthogonal to the propagation direction [Optica 6, 1547, (2019)] and the optical phase circulates in space ...
H. Milchberg, S. Hancock, S. Anaraki
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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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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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