Search Results - "Andreev, Yu.M"
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Measurement of the intrinsic hadronic contamination in the NA64−e high-purity e+/e− beam at CERN
Published in Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment (01-12-2023)“…We present the measurement of the intrinsic hadronic contamination at the CERN SPS H4 beamline configured to transport electrons and positrons at 100 GeV/c…”
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Oxide nonlinear crystals: optical properties and phase-matching for terahertz wave generation
Published in EPJ Web of conferences (01-01-2018)Get full text
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Linear optical properties of LiIn(S 1– x Se x ) 2 crystals and tuning of phase matching conditions
Published in Solid state sciences (01-10-2005)“…LiInSe 2 and mixed LiIn(S 0.5Se 0.5) 2 crystals have been grown by vertical Bridgman–Stockbarger method. Optical properties of deep red LiInSe 2 and orange…”
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Capability of frequency conversion in BGGS and BGGSe crystals
Published in 2020 International Conference Laser Optics (ICLO) (02-11-2020)“…Numerical analysis of function capabilities for nonlinear optical frequency conversion (harmonic generation, sum- and difference-frequency generation,…”
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Conference Proceeding -
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Search for a New B − L Z ′ Gauge Boson with the NA64 Experiment at CERN
Published in Physical review letters (14-10-2022)Get full text
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Search for Light Dark Matter with NA64 at CERN
Published in Physical review letters (20-10-2023)“…Thermal dark matter models with particle χ masses below the electroweak scale can provide an explanation for the observed relic dark matter density. This would…”
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STIMULATED RAMAN SCATTERING OF CHIRPED Ti:SAPPHIRE LASER PULSES IN BaW[O.sub.4] CRYSTAL
Published in Russian physics journal (01-03-2022)“…Spectrum transformation of a chirped Ti:sapphire laser pulse stretched to 0.2 ns (initial duration of a transform-limited pulse of 90 fs) was experimentally…”
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First Results in the Search for Dark Sectors at NA64 with the CERN SPS High Energy Muon Beam
Published in Physical review letters (24-05-2024)“…We report the first search for dark sectors performed at the NA64 experiment employing a high energy muon beam and a missing energy-momentum technique. Muons…”
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Hunting down the X17 boson at the CERN SPS
Published in The European physical journal. C, Particles and fields (01-12-2020)“…Recently, the ATOMKI experiment has reported new evidence for the excess of e + e - events with a mass ∼ 17 MeV in the nuclear transitions of 4 He, that they…”
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OPTICAL PROPERTIES AND TERAHERTZ RADIATION GENERATION IN A [LI.sub.2][B.sub.4][O.sup.7] CRYSTAL
Published in Russian physics journal (27-04-2021)“…Spectral dependences of components of the refractive index and absorption coefficient in a [Li.sub.2][B.sub.4][O.sub.7] (LB4) nonlinear crystal are determined…”
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Optical properties of borate family nonlinear crystals and their application in sources of intense terahertz radiation
Published in Nauchno-tekhnicheskiĭ vestnik informat͡s︡ionnykh tekhnologiĭ, mekhaniki i optiki (25-06-2023)“…Nonlinear crystals of the borate family are efficient harmonic generators for intense laser sources because of their high laser-induced damage threshold at…”
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BBO, LBO, AND KTP NONLINEAR CRYSTALS AS SOURCES OF MILLIMETER-WAVE RADIATION
Published in Russian physics journal (01-10-2020)“…The refractive indices and the absorption coefficients of [beta]-BBO, LBO, and KTP nonlinear optical crystals have been measured in the wavelength range of…”
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Temperature phase-matching tuning of nonlinear ZnGeP2 crystal for frequency conversion under noncritical spectral phase-matching
Published in Infrared physics & technology (01-11-2019)“…•Temperature dependences of ZnGeP2 crystal indices.•Broadband sum frequency generation at various ZnGeP2 crystal temperatures.•Spectrum tuning by the crystal…”
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Doubling of THz Radiation Frequency in Nonlinear Borate Crystals
Published in Russian physics journal (01-11-2021)“…The use of nonlinear oxide crystals for radiation generation and conversion into terahertz (THz) range using the nonlinear crystal optics methods is a new…”
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15
Comments on “Optical properties of borate crystals in the terahertz domain”
Published in Optics communications (15-04-2016)“…We comment on the recent paper by V.D. Antsygin et al. [Opt. Commun. 309 (2013) 333–337], in which for the first time dispersions of refractive indices nx,z in…”
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GaSe:Er3+ crystals for SHG in the infrared spectral range
Published in Optics communications (01-05-2014)“…Centimeter-sized Er-doped single crystals were grown from the melts GaSe:Er(0.025, 0.1, 0.5, 1 and 2at%) by modified vertical Bridgman technology. Real Er…”
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Modernization of the Thl-100 Laser System to Produce Powerful Terahertz Radiation
Published in Russian physics journal (01-03-2020)“…This paper presents the results of research on parameters of the THL-100 hybrid laser system of the visible spectrum with a view to modernizing it, in order to…”
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Structural characterization of pure and doped GaSe by nonlinear optical method
Published in Journal of crystal growth (01-03-2011)“…In this study angular dependencies of type-I and type-II phase matching in pure and doped GaSe were applied for efficient identification of their polytype…”
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Optical properties of non-linear crystal grown from the melt GaSe–AgGaSe2
Published in Optics communications (15-01-2013)“…Modified GaSe single crystal was grown from the melt with charge composition GaSe+10 mass% of AgGaSe2. Lattice structure, visible to mid-IR and further THz…”
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Modified GaSe crystal as a parametric frequency converter
Published in Applied physics. B, Lasers and optics (01-01-2006)“…Physical and optical properties of GaSe, doped with indium and sulphur has been discussed. Generation of tunable mid-infrared radiation by the technique of…”
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