Results 11 to 20 of about 41,968 (295)

Leaky Lamb Wave Radiation from a Waveguide Plate with Finite Width

open access: yesApplied Sciences, 2020
In this paper, leaky Lamb wave radiation from a waveguide plate with finite width is investigated to gain a basic understanding of the radiation characteristics of the plate-type waveguide sensor.
Sang-Jin Park   +2 more
doaj   +1 more source

Spectral tuning of diamond photonic crystal slabs by deposition of a thin layer with silicon vacancy centers

open access: yesNanophotonics, 2021
The controlled extraction of light from diamond optical color centers is essential for their practical prospective applications as single photon sources in quantum communications and as biomedical sensors in biosensing.
Fait Jan   +5 more
doaj   +1 more source

Angular Momentum of Leaky Modes in Hollow-Core Fibers

open access: yesFibers, 2022
It is known that angular momentum (AM) is an important characteristic of light, which can be separated into the spin (SAM) and orbital parts (OAM). The dynamical properties of the spin and orbital angular momentums are determined by the polarization and ...
Grigory Alagashev   +3 more
doaj   +1 more source

Leaky waves in planar dielectric waveguide

open access: yesDiscrete and Continuous Models and Applied Computational Science, 2019
A new analytical and numerical solution of the electrodynamic waveguide problem for leaky modes of a planar dielectric symmetric waveguide is proposed.
Dmitriy V. Divakov   +4 more
doaj   +1 more source

Experimental and theoretical confirmation of Bloch-mode light propagation in planar photonic crystal waveguides [PDF]

open access: yes, 2002
The dispersion diagram of the leaky modes in the planar photonic crystal waveguide is experimentally obtained for the wavelengths from 1440 to 1590 nm. A small stop band, around wavelength 1500 nm, is detected.
Allan, Douglas C.   +6 more
core   +1 more source

Spontaneous Emission in Leaky Modes of Nanowires

open access: yesSemiconductors, 2022
Analytical expressions for spontaneous emission pro-bability in the vicinity of nanowire for the emitter oriented in axial, radial and azimuthal direction in respect to the nanowire axis, has been obtained. Directionality of emission and probability of emission have been calculated for various positions of emitter.
null Kaliteevski M. A.   +2 more
openaire   +1 more source

Spatial coherence filtering of normal incidence light through leaky mode engineering

open access: yesAIP Advances, 2022
Filtering light by coherence by metasurfaces would enable compact, integrable coherence filters. A recent such proposal centered on a metasurface of zigzags.
Hang Li   +9 more
doaj   +1 more source

Sausage oscillations of coronal loops [PDF]

open access: yes, 2006
Aims. Analytical theory predicts the existence of trapped global (or fundamental) sausage fast magnetoacoustic modes in thick and dense coronal loops only, with the periods estimated as the ratio of double the loop length and the Alfvén speed outside the
Arber   +20 more
core   +1 more source

Backside emission leaky-mode modulators

open access: yesOptics Express, 2017
We report on an advancement to leaky-mode modulators that allows for backside emission from the device. This is accomplished by adding a high spatial frequency surface relief grating (~300 nm period) to the backside of the modulator. The outcome being a theoretical arbitrary increase in usable output aperture, at the cost of angular deflection.
Stephen, McLaughlin   +3 more
openaire   +2 more sources

Influence of Subwavelength Grating Asymmetry on Long-Wavelength Infrared Transmittance Filters

open access: yesIEEE Photonics Journal, 2018
Subwavelength dielectric gratings provide a means of narrowband spectral filtering by coupling to quasi-guided leaky modes, providing a high reflectivity background and narrowband transmittance via Fano resonance behavior.
Michael Barrow   +2 more
doaj   +1 more source

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