Results 1 to 10 of about 6,406 (115)

Nonlinear Optical Rectification in an Inversion-Symmetry-Broken Molecule near a Metallic Nanoparticle [PDF]

open access: yesNanomaterials, 2022
We study the nonlinear optical rectification of an inversion-symmetry-broken quantum system interacting with an optical field near a metallic nanoparticle, exemplified in a polar zinc–phthalocyanine molecule in proximity to a gold nanosphere.
Natalia Domenikou   +3 more
doaj   +2 more sources

Optical rectification and thermal currents in optical tunneling gap antennas [PDF]

open access: yesNanophotonics, 2022
Electrically-contacted optical gap antennas are nanoscale interface devices enabling the transduction between photons and electrons. This new generation of device, usually constituted of metal elements (e.g.
Mennemanteuil Marie Maxime   +3 more
doaj   +2 more sources

Optical rectification and second harmonic generation in CdSe/MgSe asymmetric double quantum wells [PDF]

open access: yesHeliyon
In this study, we report theoretically the effect of well, barrier widths and polarization on optical properties of intersubband transitions (ISBT) in CdSe/MgSe asymmetric quantum wells (ADQWs).
Nouf Ahmed Althumairi
doaj   +2 more sources

Highly efficient THz generation by optical rectification of mid-IR pulses in DAST

open access: yesAPL Photonics, 2021
We report on efficient THz generation in DAST by optical rectification of intense mid-IR pulses centered at (i) 3.9 μm and (ii) its second harmonic at 1.95 μm.
Claudia Gollner   +8 more
doaj   +2 more sources

Ionizing terahertz waves with 260 MV/cm from scalable optical rectification [PDF]

open access: yesLight: Science & Applications
Terahertz (THz) waves, known as non-ionizing radiation owing to their low photon energies, can actually ionize atoms and molecules when a sufficiently large number of THz photons are concentrated in time and space.
Hyeongmun Kim   +8 more
doaj   +2 more sources

Role of optical rectification in photon-assisted tunneling current

open access: yesCommunications Physics, 2023
Optical rectification describes a nonlinear optical process that can be exploited by nanoantennas to convert optical radiation to a DC voltage, acting as a type of detector.
Pierre Février   +4 more
doaj   +1 more source

Optical Ortho-Rectification for Image-Based Stream Surface Flow Observations Using a Ground Camera

open access: yesFrontiers in Water, 2021
Image-based stream flow observation consists of three components: (i) image acquisition, (ii) ortho-rectification, and (iii) an image-based velocity estimation. Ortho-rectification is a type of coordinate transformation.
Ryota Tsubaki, Runye Zhu
doaj   +1 more source

Observation of magneto-electric rectification at non-relativistic intensities

open access: yesNature Communications, 2020
The role of the optical magnetic field is generally not considered at nonrelativistic light intensities. Here the authors show magneto-electric rectification, an optical nonlinear effect due to electric and magnetic field coupling, in a thin film of the ...
M. Tuan Trinh   +5 more
doaj   +1 more source

Multipulse Optical-Rectification-Based THz Source for Accelerator Applications

open access: yesInstruments, 2023
THz sources offer the potential for higher frequencies and higher breakdown thresholds in accelerating structures in comparison with conventional RF sources.
Maximilian Lenz, Pietro Musumeci
doaj   +1 more source

Cherenkov-Type Terahertz Generation by Long-Wavelength Ultrafast Laser Excitation of a GaP Crystal

open access: yesPhotonics, 2023
We explore, both theoretically and experimentally, the potential of semiconductor materials for the Cherenkov scheme of terahertz generation on the example of GaP crystal pumped by femtosecond laser pulses of 1.54 μm wavelength.
S. B. Bodrov   +6 more
doaj   +1 more source

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