Results 21 to 30 of about 23,200 (310)

Optimization of plasmon–plasmon coupling in photorefractive layered media [PDF]

open access: yes, 2013
In this paper we study grating-induced plasmon–plasmon coupling in photorefractive layered media using a weakcoupling approximation. The method used is applicable to general layered structures that support both plasmonic and optical modes, such as ...
Daly, K.R.   +3 more
core   +1 more source

Mid-infrared volume phase gratings manufactured using ultrafast laser inscription [PDF]

open access: yes, 2013
We report on the ultrafast laser inscription (ULI) of volume phase gratings inside gallium lanthanum sulphide (GLS) chalcogenide glass substrates. The effect of laser pulse energy and grating thickness on the dispersive properties of the gratings is ...
Thomson, Robert R   +3 more
core   +1 more source

Polarization-Independent Two-Layer Grating With Five-Port Splitting Output Under Normal Incidence

open access: yesIEEE Photonics Journal, 2020
In this paper, we report a two-layer five-port diffraction grating by a polarization-independent design under normal incidence. To be different from conventional five-port gratings, initially, we design a novel two-layer grating with operation in ...
Bowen Gong, Huiying Wen, Hongtao Li
doaj   +1 more source

Optimal Control of Passive Cascaded Liquid Crystal Polarization Gratings

open access: yesApplied Sciences, 2023
The incidence angle of a beam entering a liquid crystal variable retarder (LCVR) and the liquid crystal polarization grating (LCPG) is greater when the LCPG is utilized in the quadrature cascade, which reduces the diffraction efficiency.
Huan Qin   +3 more
doaj   +1 more source

Electromagnetic wave diffraction on a “strip grating – ferromagnetic half-space” composite structure: surface-wave resonances [PDF]

open access: yesРадиофизика и электроника, 2020
Subject and Purpose. A theoretic study is given to the diffraction of a monochromatic plane E-polarized electromagnetic wave on a composite structure like a periodic strip grating bordering a half-space filled with a lossy homogeneous gyrotropic ...
A.V. Brovenko   +3 more
doaj   +1 more source

Efficient Scattering Analysis of Arbitrarily Shaped Local Defect in Diffraction Grating [PDF]

open access: yes, 2016
We propose an algorithm for the scattering analyses of gratings with various local defects based on the difference-field boundary-element method (DFBEM).
SUGISAKA, Jun-ichiro   +2 more
core   +1 more source

Optimization of parameters of multilayer diffraction gratings using needle variations

open access: yesИзвестия высших учебных заведений. Поволжский регион: Физико-математические науки, 2022
Background. The purpose of the work is to optimize the diffraction efficiency in the first diffraction order of a multilayer diffraction grating. Material and methods. Needle variations are used to optimize diffraction efficiency.
V.Yu. Martynova   +2 more
doaj   +1 more source

THE FREQUENCY TUNNING RANGE OF DIFFRACTION RADIATION OSCILLATOR WITH PERIODICAL STRUCTURE IN A DOUBLE GRATING FORM [PDF]

open access: yesРадиофизика и электроника, 2016
The diffraction radiation oscillator is one of the perspective sources for millimeter and T-wave, and it demands further improvement of its output characteristics.
I. O. Kovalov, V. S. Miroshnichenko
doaj   +1 more source

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