Results 21 to 30 of about 3,249,101 (332)
PROSPECTS OF THE USE OF GRADIENT GRATES IN THE LASERS OF TERAHERTZ RANGE [PDF]
Radio Physics and Radio Astronomy, 2018 Purpose: The improvement and development of terahertz radiation sources is required for the further development of the terahertz frequency range. Submillimeter lasers are one of the few sources of terahertz radiation.
M. I. Dzyubenko +3 more
doaj +1 more source
The Chemical Composition of the Medieval Mirrors from Golden Horde Time Settlements
Вестник Волгоградского государственного университета. Серия 4. История, регионоведение, международные отношения, 2021 Introduction. The paper discussed the results of the study concerning the chemical composition of 16 mirrors from the Golden Horde period originating from the settlements Selitrennoe, Vodyanskoe, Uvekskoe Khmelevskoe I, Shirokiy Buerak and ...
Kseniya Kovaleva
doaj +1 more source
Lightweight Carbon Fiber Mirrors for Solar Concentrator Applications [PDF]
, 2017 Lightweight parabolic mirrors for solar concentrators have been fabricated using carbon fiber reinforced polymer (CFRP) and a nanometer scale optical surface smoothing technique.
Atwater, Harry A. +9 more
core +2 more sources
Teoriya i praktika arkheologicheskikh issledovaniy, 2016 The article presents the circumstances of discovery in the territory of the Baraba forest-steppe (near Lake Wait, Karagatskom in the Novosibirsk region) of a metal mirror, heavily coated with oxides. The find has been subjected to the restoration at the Institute of Archaeology and Ethnography of the Siberian Branch of the Russian Academy of Sciences ...
Borodovskiy A., Tishkin A.
openaire +3 more sources
THE CASIMIR FORCE BETWEEN METALLIC MIRRORS [PDF]
The Ninth Marcel Grossmann Meeting, 2002 In order to compare recent experimental results with theoretical predictions we study the influence of finite conductivity of metals on the Casimir effect. The correction to the Casimir force and energy due to imperfect reflection and finite temperature are evaluated for plane metallic plates where the dielectric functions of the metals are modeled by ...
Lambrecht, Astrid +2 more
openaire +3 more sources
Sunlight Communication System Built with Tunable 3D-Printed Optical Components
Photonics, 2022 In this paper, optical components are fabricated using a 3D printing method. The two following strategies are adopted: 1. combining 3D printing, “origami”, and metal coating/attaching to directly manufacture parabolic reflectors; 2.
Ching-Kai Shen +4 more
doaj +1 more source
Materials & Design, 2022 Lattice structure has excellent mechanical properties to develop lightweight devices, and additive manufacture makes it possible to construct complex lattice without extra cost.
Ding Yang +3 more
doaj +1 more source
Optical magnetic mirrors without metals
Optica, 2014 The reflection of an optical wave from a metal, arising from strong interactions between the optical electric field and the free carriers of the metal, is accompanied by a phase reversal of the reflected electric field. A far less common route to achieve high reflectivity exploits strong interactions between the material and the optical magnetic field ...
Liu, Sheng +11 more
openaire +3 more sources
Photonic microstructures as laser mirrors [PDF]
, 1998 Deeply etched 1-D third-order Bragg reflectors have been used as mirrors for broad-area semiconductor lasers operating at 975-nm wavelength. From a threshold and efficiency analysis, we determine the mirror reflectivity to be approximately 95%.
De La Rue, Richard M. +4 more
core +1 more source
Metamaterial Coatings for Broadband Asymmetric Mirrors [PDF]
, 2006 We report on design and fabrication of nano-composite metal-dielectric thin film coatings with high reflectance asymmetries. Applying basic dispersion engineering principles to model a broadband and large reflectance asymmetry, we obtain a model ...
A. Chen +20 more
core +2 more sources