Articles with "second harmonic" as a keyword



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New Opportunities: Second Harmonic Generation of Boron‐Doped Graphene Quantum Dots for Stem Cells Imaging and Ultraprecise Tracking in Wound Healing

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Published in 2019 at "Advanced Functional Materials"

DOI: 10.1002/adfm.201902235

Abstract: Second harmonic generation (SHG) has recently emerged, having the advantages of no bleaching, no blinking, and no signal saturation, as well as a high signal to‐noise ratio compared to fluorescence. Existing SHG probes are based… read more here.

Keywords: doped graphene; stem; graphene quantum; second harmonic ... See more keywords
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High‐Throughput Scanning Second‐Harmonic‐Generation Microscopy for Polar Materials

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Published in 2023 at "Advanced Materials"

DOI: 10.1002/adma.202300348

Abstract: The Materials Genome Initiative aims to discover, develop, manufacture, and deploy advanced materials at twice the speed of conventional approaches. To achieve this, high‐throughput characterization is essential for the rapid screening of candidate materials. In… read more here.

Keywords: second harmonic; microscopy; high throughput; harmonic generation ... See more keywords
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Nanoscale Optical Imaging of 2D Semiconductor Stacking Orders by Exciton‐Enhanced Second Harmonic Generation

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Published in 2022 at "Advanced Optical Materials"

DOI: 10.1002/adom.202200085

Abstract: Second harmonic generation (SHG) is a nonlinear optical response arising exclusively from broken inversion symmetry in the electric-dipole limit. Recently, SHG has attracted widespread interest as a versatile and noninvasive tool for characterization of crystal… read more here.

Keywords: harmonic generation; optical imaging; nanoscale optical; symmetry ... See more keywords
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Nonlinear Strong Coupling by Second‐Harmonic Generation Enhancement in Plasmonic Nanopatch Antennas

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Published in 2022 at "Advanced Optical Materials"

DOI: 10.1002/adom.202200510

Abstract: Enhanced electromagnetic fields within plasmonic nanocavity mode volumes enable multiple significant effects that lead to applications in both the linear and nonlinear optical regimes. In this work, enhanced second‐harmonic generation (SHG) is demonstrated from individual… read more here.

Keywords: second harmonic; plasmonic nanopatch; harmonic generation; strong coupling ... See more keywords
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[K2PbX][Ga7S12] (X = Cl, Br, I): The First Lead‐Containing Cationic Moieties with Ultrahigh Second‐Harmonic Generation and Band Gaps Exceeding the Criterion of 2.33 eV

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Published in 2023 at "Advanced Science"

DOI: 10.1002/advs.202207630

Abstract: In contrast to anionic group theory of nonlinear optical (NLO) materials that second‐harmonic generation (SHG) responses mainly originate from anionic groups, structural regulation on the cationic groups of salt‐inclusion chalcogenides (SICs) is performed to make… read more here.

Keywords: ga7s12; second harmonic; band gaps; harmonic generation ... See more keywords
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The Enhanced Second‐Harmonic Generation Based on Magnetic‐Lorentz‐Force Effect

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Published in 2019 at "Annalen der Physik"

DOI: 10.1002/andp.201800470

Abstract: Electromagnetic coupling generates a second‐harmonic signal via the magnetic component of Lorentz force of free electrons. In this work, the enhancement of artificial second‐harmonic generation (SHG) from plasmonic metamaterial with near‐field electromagnetic coupling is theoretically… read more here.

Keywords: lorentz force; electromagnetic coupling; second harmonic; harmonic generation ... See more keywords
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Dielectric Chiral Metasurfaces for Second‐Harmonic Generation with Strong Circular Dichroism

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Published in 2020 at "Annalen der Physik"

DOI: 10.1002/andp.202000078

Abstract: Dielectric chiral metasurfaces can generate harmonic waves with high efficiency and strong circular dichroism (CD), when they are supported by metallic substrates. Numerical results show that the second‐harmonic generation (SHG) efficiency of about 10−3% for… read more here.

Keywords: chiral metasurfaces; circular dichroism; dielectric chiral; second harmonic ... See more keywords
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Dynamics of resonant self‐focusing on second harmonic generation of Gaussian laser beam in a rippled density plasma

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Published in 2021 at "Contributions to Plasma Physics"

DOI: 10.1002/ctpp.202100031

Abstract: Resonant second harmonic generation by a Gaussian laser beam in a rippled density plasma is studied using the moment theory approach. The nonlinearity arises through the relativistic mass effect and ponderomotive forces. The laser beam… read more here.

Keywords: second harmonic; laser beam; harmonic generation; density ... See more keywords
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Dual- and single-shot susceptibility ratio measurements with circular polarizations in second-harmonic generation microscopy.

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Published in 2020 at "Journal of biophotonics"

DOI: 10.1002/jbio.201960167

Abstract: Polarization-resolved second-harmonic generation (P-SHG) microscopy is a technique capable of characterizing nonlinear optical properties of non-centrosymmetric biomaterials by extracting the nonlinear susceptibility tensor components ratio χ zzz 2 ' / χ zxx 2 ' ,… read more here.

Keywords: microscopy; harmonic generation; dual single; shot ... See more keywords
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Diagnosing temporomandibular joint disorders using second harmonic imaging of collagen fibers

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Published in 2022 at "Journal of Biophotonics"

DOI: 10.1002/jbio.202200075

Abstract: This proposed optical imaging method is a nondestructive, real‐time and high‐resolution approach to distinguish healthy and injured temporomandibular joint (TMJ) tissues. And the TMJ health index was invented. TMJ pathologies are commonly and reported frequently.… read more here.

Keywords: collagen fibers; second harmonic; collagen; temporomandibular joint ... See more keywords
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Highly miniaturized wideband 3‐dB branch‐line hybrid with second harmonic‐suppression

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Published in 2020 at "Microwave and Optical Technology Letters"

DOI: 10.1002/mop.32322

Abstract: In this article, a highly miniaturized second harmonic suppressed 3‐dB branch‐line hybrid (BLH) with wideband performance is developed by employing a novel transmission‐line architecture (TLA). The proposed architecture consists of a coupled‐line, a series microstrip‐line… read more here.

Keywords: wideband; line hybrid; second harmonic; highly miniaturized ... See more keywords