Search Results - "Awan, Kashif M."
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Group III-V semiconductors as promising nonlinear integrated photonic platforms
Published in Advances in physics: X (31-12-2022)“…Group III-V semiconductors are based on the elements of groups III and V of the periodic table. The possibility to grow thin-films made of binary, ternary, and…”
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Journal Article -
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Hyperpolarizability of Plasmonic Meta-Atoms in Metasurfaces
Published in Nano letters (13-01-2021)“…Plasmonic metasurfaces are promising as enablers of nanoscale nonlinear optics and flat nonlinear optical components. Nonlinear optical responses of such…”
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3
Spectroscopic Signatures of Plasmonic Near‐Fields on High‐Harmonic Emission
Published in Laser & photonics reviews (01-12-2023)“…Intense laser fields can reveal the attosecond and femtosecond response of matter in the emitted photoelectrons and high‐harmonic photons. The complementary…”
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Tuneable four-wave mixing in AlGaAs nanowires
Published in Optics express (24-08-2015)“…We have experimentally demonstrated broadband tuneable four-wave mixing in AlGaAs nanowires with the widths ranging between 400 and 650 nm and lengths from 0…”
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5
Tunable four-wave mixing in AlGaAs waveguides of three different geometries
Published in Optics communications (15-01-2021)“…The AlGaAs material platform has been intensively used to develop nonlinear photonic devices on-a-chip, thanks to its superior nonlinear optical properties. We…”
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6
Demonstration of optical nonlinearity in InGaAsP/InP passive waveguides
Published in Optical materials (01-10-2018)“…We report on the study of the third-order nonlinear optical interactions in InxGa1-xAsyP1-y/InP strip-loaded waveguides. The material composition and waveguide…”
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Aluminium gallium arsenide waveguide designs for efficient four-wave mixing
Published in 2015 Photonics North (01-06-2015)“…Explosive growth in internet traffic has prompted huge interest in the area of all-optical signal processing. It can provide much higher data rates at much…”
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Conference Proceeding -
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Epitaxially-grown Gallium Nitride on Gallium Oxide substrate for photon pair generation in visible and telecomm wavelengths
Published in 2016 Photonics North (PN) (01-05-2016)“…Gallium Nitride (GaN), along with other III-Nitrides, is attractive for optoelectronic and electronic applications due to its wide direct energy bandgap, as…”
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Conference Proceeding -
9
Controlling the polarization and phase of high-order harmonics with a plasmonic metasurface
Published in Optica (20-09-2022)“…Nanostructured surfaces, or metasurfaces, allow exquisite control of linear and nonlinear optical processes by reshaping the amplitude, phase, and polarization…”
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10
Fabrication and optical characterization of GaN waveguides on (−201)-oriented β-Ga_2O_3
Published in Optical materials express (01-01-2018)Get full text
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Fabrication and optical characterization of GaN waveguides on (−201)-oriented β-Ga^sub 2^O^sub 3
Published in Optical materials express (01-01-2018)“…Gallium nitride (GaN), a wide-bandgap III–V semiconductor material with a bandgap wavelength λg = 366 nm (for Wurtzite GaN) and transparency window covering…”
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Quaternary III-V semiconductor compounds for integrated nonlinear optics
Published in 2017 Photonics North (PN) (01-06-2017)“…In this study, we propose several designs for integrated waveguides based on quaternary III-V semiconductor compounds InGaAsP (on InP substrate) and AlGaAsSb…”
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Conference Proceeding -
13
Geometry-dependent two-photon absorption followed by free-carrier absorption in AlGaAs waveguides
Published 26-10-2021“…Nonlinear absorption can limit the efficiency of nonlinear optical devices. However, it can also be exploited for optical limiting or switching applications…”
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14
Tunable Four-Wave Mixing in AlGaAs Waveguides of Three Different Geometries
Published 11-09-2020“…The AlGaAs material platform has been intensively used to develop nonlinear photonic devices on-a-chip, thanks to its superior nonlinear optical properties. We…”
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Journal Article -
15
Hyperpolarizability of plasmonic meta-atoms in metasurfaces
Published 09-07-2020“…Plasmonic metasurfaces are promising as enablers of nanoscale nonlinear optics and flat nonlinear optical components. Nonlinear optical responses of such…”
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Journal Article -
16
Demonstration of Optical Nonlinearity in InGaAsP/InP Passive Waveguides
Published 05-06-2018“…We report on the study of the third-order nonlinear optical interactions in In$_{x}$Ga$_{1-x}$As$_{y}$P$_{1-y}$/InP strip-loaded waveguides. The material…”
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Journal Article -
17
Gallium nitride on gallium oxide substrate for integrated nonlinear optics
Published in 2017 Photonics North (PN) (01-06-2017)“…Gallium Nitride (GaN), being a direct bandgap semiconductor with a wide bandgap and high thermal stability, is attractive for optoelectronic and electronic…”
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Conference Proceeding