Phase-matched relativistic second harmonic generation in clusters with density ripple
Sign Up to like & getrecommendations! 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
Sign Up to like & getrecommendations! 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
Sign Up to like & getrecommendations! 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
Sign Up to like & getrecommendations! 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
Phase-Matched Mid-Infrared Difference Frequency Generation Using a Nanostructured Gallium Arsenide Metamaterial With Nanoholes
Sign Up to like & getrecommendations! 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
Sign Up to like & getrecommendations! 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.
Sign Up to like & getrecommendations! 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.
Sign Up to like & getrecommendations! 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
Phase-matched second-harmonic generation in a flux grown KTP crystal ridge optical waveguide.
Sign Up to like & getrecommendations! 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
Octave-wide phase-matched four-wave mixing in dispersion-engineered crystalline microresonators.
Sign Up to like & getrecommendations! Published in 2019 at "Optics letters"
DOI: 10.1364/ol.44.003146
Abstract: In this Letter, we report phase-matched four-wave mixing separated by over one octave in a dispersion-engineered crystalline microresonator. Experimental and numerical results presented here confirm that primary sidebands were generated with a frequency shift up… read more here.
Keywords: matched four; wave mixing; four wave; dispersion engineered ... See more keywords
Quasi-phase matched second harmonic generation in a PMN-38PT crystal.
Sign Up to like & getrecommendations! Published in 2022 at "Optics letters"
DOI: 10.1364/ol.450042
Abstract: We used an all-optical poling method to fabricate quadratic nonlinearity gratings in a tetragonal 0.62Pb(Mg1/3Nb2/3)O3-0.38PbTiO3 (PMN-38PT) crystal. We then employed these gratings in quasi-phase matched collinear second harmonic generation processes. By measuring the second harmonic… read more here.
Keywords: second harmonic; pmn 38pt; quasi phase; phase matched ... See more keywords