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   Articles with "phase matched" as a keyword



Phase-matched relativistic second harmonic generation in clusters with density ripple

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recommendations! Published in 2017 at "Optics Communications"

DOI: 10.1016/j.optcom.2016.09.009

Abstract: Abstract An intense short-pulse laser obliquely incident on a clustered gas quickly converts the atomic clusters into hot plasma balls. The laser beam produces a second harmonic due to nonlinear response of cluster and plasma… read more here.

Keywords: laser beam; second harmonic; harmonic generation; phase matched ... See more keywords

Noncritical phase-matched fourth harmonic generation properties of traditional grown large-size DKDP crystal

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recommendations! Published in 2017 at "Optics Communications"

DOI: 10.1016/j.optcom.2016.12.071

Abstract: Abstract Noncritical phase-matched (NCPM) fourth harmonic generation (FHG) of 1053 nm was conducted at different regions of a traditional grown large-size 65.8% deuterated potassium dihydrogen phosphate (DKDP) crystal. NCPM FHG was realized at the temperature of… read more here.

Keywords: noncritical phase; fourth harmonic; dkdp crystal; traditional grown ... See more keywords

Orthogonal quasi-phase-matched superlattice for generation of hyperentangled photons

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recommendations! Published in 2017 at "Scientific Reports"

DOI: 10.1038/s41598-017-03023-1

Abstract: A crystal superlattice structure featuring nonlinear layers with alternating orthogonal optic axes interleaved with orthogonal poling directions, is shown to generate high-quality hyperentangled photon pairs via orthogonal quasi-phase-matched spontaneous parametric downconversion. We demonstrate that orthogonal… read more here.

Keywords: phase; generation; phase matched; orthogonal quasi ... See more keywords

High-g-Factor Phase-Matched Circular Dichroism of Second Harmonic Generation in Chiral Polar Liquids

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recommendations! Published in 2023 at "Journal of Materials Chemistry C"

DOI: 10.1039/d3tc00981e

Abstract: Circular dichroism is a technologically important phenomenon contrasting the absorption and resultant emission properties between left- and right-handed circularly polarized light. While the chiral handedness of systems mainly determines the... read more here.

Keywords: high factor; dichroism; phase matched; factor phase ... See more keywords

All optical poling of KTP crystal for phase matched second harmonic generation

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recommendations! Published in 2025 at "Applied Physics Letters"

DOI: 10.1063/5.0255135

Abstract: We demonstrate periodic ferroelectric domain inversion in KTiOPO4 (KTP) crystals using the femtosecond laser poling technique. The effects of laser parameters on the morphological characteristics of these light-induced domains were systematically investigated. A periodically poled… read more here.

Keywords: phase matched; matched second; ktp crystal; optical poling ... See more keywords

Phase-Matched Mid-Infrared Difference Frequency Generation Using a Nanostructured Gallium Arsenide Metamaterial With Nanoholes

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recommendations! Published in 2020 at "IEEE Photonics Journal"

DOI: 10.1109/jphot.2020.2992192

Abstract: Phase-matched wavelength conversion is achieved in difference frequency generation (DFG) in a structure of gallium arsenide (GaAs) with periodic arrays of nanoholes. Linear properties (refractive indices) of the structure are determined from the S-parameters of… read more here.

Keywords: frequency generation; gallium arsenide; phase matched; difference ... See more keywords

Gain- and Phase-Matched Mini-TWTs

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recommendations! Published in 2018 at "IEEE Transactions on Electron Devices"

DOI: 10.1109/ted.2018.2812926

Abstract: Traveling-wave tubes (TWTs) in broadband power-combining applications should have closely matched gain and phase to achieve high system-level efficiency. A gain- and phase-matched TWT operating over a frequency band of 7.5–18 GHz with a minimum… read more here.

Keywords: phase; gain phase; mini twts; matched mini ... See more keywords

Terahertz-induced cascaded interactions between spectra offset by large frequencies.

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recommendations! Published in 2019 at "Optics express"

DOI: 10.1364/oe.27.019254

Abstract: We explore the dynamics of a system where input spectra in the optical domain with very disparate center frequencies are strongly coupled via highly phase-matched, cascaded second-order nonlinear processes driven by terahertz radiation. The only… read more here.

Keywords: phase matched; matched terahertz; frequency; seed ... See more keywords

Spectrally pure photons generated in a quasi-phase matched xenon-filled hollow-core photonic crystal fiber.

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recommendations! Published in 2022 at "Optics express"

DOI: 10.1364/oe.446488

Abstract: Spectrally pure photons heralded from unentangled photon pair sources are crucial for any quantum optical system reliant on the multiplexing of heralded photons from independent sources. Generation of unentangled photon pairs in gas-filled hollow-core photonic… read more here.

Keywords: pure photons; spectrally pure; fiber; quasi phase ... See more keywords

Vortex solitons in rotating quasi-phase-matched photonic crystals.

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recommendations! Published in 2024 at "Optics express"

DOI: 10.1364/oe.539227

Abstract: We present an approach to generate stable vortex solitons (VSs) in rotating quasi-phase-matched photonic crystals with quadratic nonlinearity. The photonic crystal is introduced with a checkerboard structure, which can be realized using available technology. The… read more here.

Keywords: quasi phase; matched photonic; photonic crystals; phase matched ... See more keywords

Phase-matched second-harmonic generation in a flux grown KTP crystal ridge optical waveguide.

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recommendations! Published in 2018 at "Optics letters"

DOI: 10.1364/ol.43.003770

Abstract: Type II second-harmonic generation was performed in a 15.8-mm-long KTiOPO4 (KTP) micrometric ridge waveguide with an average transversal section of 38  μm2. Theoretical predictions are compared with experiments. Strong agreements are obtained for both phase-matching wavelengths… read more here.

Keywords: harmonic generation; optics; phase matched; second harmonic ... See more keywords