Design of 4.7 μm High-Efficiency Hybrid Dielectric Reflection Gratings
Micromachines, 2022 Traditional reflective diffraction gratings working at 4.7 μm are fabricated by metal coatings. Due to the absorption of the metal itself, the diffraction efficiency (DE) could not reach over 95%.
Ye Wang +5 more
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A 1 × 2 Two-Dimensional Slanted Grating Based on Double-Layer Cylindrical Structure
Applied Sciences, 2023 Diffraction gratings play an increasingly important role in various planar optical systems, such as near-eye display systems for virtual reality (VR) and augmented reality (AR). The slanted gratings have more advantages than other elements.
Yuda Chen +5 more
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Electromagnetic wave diffraction on a “strip grating – ferromagnetic half-space” composite structure: surface-wave resonances [PDF]
Радиофизика 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
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Generalized Space-Time Periodic Diffraction Gratings: Theory and Applications [PDF]
Phys. Rev. Applied 12, 024026 (2019), 2019 This paper studies the theory and applications of the diffraction of electromagnetic waves by space-time periodic (STP) diffraction gratings. We show that, in contrast with conventional spatially periodic grating, a STP diffraction grating produces spatial diffraction orders, each of which is formed by an infinite set of temporal diffraction orders ...
arxiv +1 more source
ON A METHOD FOR SOLVING THE PROBLEM OF ELECTROMAGNETIC WAVE DIFFRACTION ON A DIFFRACTION GRATING
Известия высших учебных заведений. Поволжский регион: Физико-математические науки, 2020 Background. The aim of the study is to develop a numerical method for solving the problem of diffraction of electromagnetic waves on a two-dimensional periodic diffraction grating. Materials and methods. A modified method of separation of variables in
E. V. Gusarova +2 more
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Optimal Control of Passive Cascaded Liquid Crystal Polarization Gratings
Applied 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
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Polarization-Independent Two-Layer Grating With Five-Port Splitting Output Under Normal Incidence
IEEE 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
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Demonstration of 3-port grating phase relations [PDF]
Optics Letters 31, 2384 (2006), 2007 We experimentally demonstrate the phase relations of 3-port gratings by investigating 3-port coupled Fabry-Perot cavities. Two different gratings which have the same 1st order diffraction efficiency but differ substantially in their 2nd order diffraction efficiency have been designed and manufactured.
arxiv +1 more source
THE FREQUENCY TUNNING RANGE OF DIFFRACTION RADIATION OSCILLATOR WITH PERIODICAL STRUCTURE IN A DOUBLE GRATING FORM [PDF]
Радиофизика 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
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