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Resonant X-ray second-harmonic generation in atomic gases / J. -C. Liu [et al.] // Phys. Rev. A. - 2019. - Vol. 100, Is. 6. - Ст. 063403, DOI 10.1103/PhysRevA.100.063403. - Cited References: 29. - The research leading to these results has received funding from a public grant from the Laboratoire d’Excellence Physics Atoms Light Matter (LabEx PALM), the Laboratoire d’Excellence MiChEm, and the Swedish Research Council (VR). J.-C.L. acknowledges support from the National Science Foundation of China under Grants No. 11574082 and No. 11974108, and the Fundamental Research Funds for the . - ISSN 2469-9926. - ISSN 2469-9934
Аннотация: We explore the X-ray second harmonic generation process induced by resonant two-photon absorption in systems with inversion symmetry. We show that this process becomes allowed in the X-ray region due to non-dipole contributions. It is found that while a plane wave pump field generates only a longitudinal second harmonic field, a Gaussian pump beam creates also a radially polarized transverse second harmonic field which is stronger than the longitudinal one. Contrary to the longitudinal component, the transverse second harmonic field with zero intensity on the axis of the pump beam can run in free space. Our theory is applied to Ar and Ne atomic vapours and predicts an energy conversion efficiency of X-ray second harmonic generation of 3.2×10−11 and 1.3×10−12, respectively.

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Держатели документа:
Department of Mathematics and Physics, North China Electric Power University, 102206 Beijing, China
Collaborative Innovation Center of Light Manipulations and Applications, Shandong Normal University, Jinan 250358, China
Synchrotron SOLEIL, l'Orme des Merisiers, Saint-Aubin, BP 48, 91192 Gif-sur-Yvette Cedex, France
Extreme Light Infrastructure Nuclear Physics (ELI-NP), 'Horia Hulubei' National Institute for Physics and Nuclear Engineering, 30 Reactorului Street, RO-077125 Magurele, Judet Ilfov, Romania
LIDYL, CEA, CNRS, Universite Paris-Saclay, CEA Saclay, 91191 Gif-sur-Yvette, France
Theoretical Chemistry & Biology, School of Biotechnology, Royal Institute of Technology, S-106 91 Stockholm, Sweden
Department of Physics and Astronomy, UppsalaUniversity, SE-75120Uppsala, Sweden
Siberian Federal University, 660041 Krasnoyarsk, Russia
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, 660036 Krasnoyarsk, Russia
Institute for Methods and Instrumentation in Synchrotron Radiation Research FG-ISRR, Helmholtz-Zentrum Berlin fur Materialien und Energie Albert-Einstein-Strasse 15, 12489 Berlin, Germany

Доп.точки доступа:
Liu, Ji-Cai; Miron, Catalin; Ågren, Hans; Polyutov, S. P.; Полютов, Сергей Петрович; Gel'mukhanov, F.; Гельмуханов, Фарис Хафизович
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    Pilipchuk, A. S.
    Generation of vortex waves in non-coaxial cylindrical waveguides / A. S. Pilipchuk, A. A. Pilipchuk, A. F. Sadreev // J. Acoust. Soc. Am. - 2019. - Vol. 146, Is. 6. - Ст. 4333, DOI 10.1121/1.5139222. - Cited References: 26. - We acknowledge discussions with Dmitrii Maksimov. This work was supported by RFBR Grant No. 18-32-00234. . - ISSN 0001-4966. - ISSN 1520-8524
   Перевод заглавия: Генерация вихревых волн в некоаксиальных цилиндрических волноводах
Рубрики:
Operator theory
   Coordinate system
   Waveguides
   Wave mechanics
   Acoustic field
   Optical field
   Optical tweezers
   Acoustical properties
   Acoustic waves
   Electrical properties and parameters
Аннотация: A non-coaxial waveguide composed of a cylindrical resonator of radius R and cylindrical waveguides with the radii r1 and r2, respectively, is considered. The radii satisfy the inequality r1˂r2˂R. The conversion from the channel with zero orbital angular momentum (OAM) into the channels with non-zero OAM is achieved by shifting the center lines of the waveguides relative to the center line of the cylindrical resonator. The center lines of input and output waveguides are shifted relative to each other by the angle Δϕ in order to twist the output acoustic wave. The conversion efficiency of the input wave with zero OAM into the output wave with non-zero OAM as dependent on the frequency, length of the resonator, and Δϕ is considered, and the domains where the efficiency can reach almost 100% are found.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, 660036 Krasnoyarsk, Russia

Доп.точки доступа:
Pilipchuk, A. A.; Пилипчук, Алина Андреевна; Sadreev, A. F.; Садреев, Алмаз Фаттахович; Пилипчук, Артем Сергеевич
}
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Vyunishev, A. M.
Quasi-phase-matched second-harmonic generation in nonlinear crystals with harmonic modulation of nonlinearity / A. M. Vyunishev, V. G. Arkhipkin // Laser Phys. - 2020. - Vol. 30, Is. 4. - Ст. 045401, DOI 10.1088/1555-6611/ab7381. - Cited References: 20 . - ISSN 1054-660X
Кл.слова (ненормированные):
Efficiency -- Harmonic analysis -- Harmonic functions -- Modulation -- Nonlinear optics -- Phase matching -- Photonic crystals -- Harmonic modulations -- Nonlinear photonic crystals -- Periodic oscillation -- Quadratic nonlinearities -- Quasi phase matching -- Quasi-phase-matched -- Rectangular lattices -- Spatial modulations -- Harmonic generation
Аннотация: We propose a new type of nonlinear photonic crystal with the lattice representing a harmonic function of the propagation coordinate. This type of spatial modulation of the quadratic nonlinearity is implemented to enhance the second-harmonic generation (SHG) efficiency. The process resembles that realized in periodic nonlinear photonic crystals with rectangular nonlinearity modulation under quasi-phase-matching. Residual periodic oscillations of the second-harmonic intensity were found. Comparison of the unipolar and bipolar modulations showed that they are equivalent with regard to the oscillations. The SHG efficiency in the harmonic lattices is 1.6 times lower compared with the efficiency corresponding to the quasi-phase-matching in periodic nonlinear photonic crystals with rectangular lattices.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center Ksc Sb Ras, Krasnoyarsk, 660036, Russian Federation
Department of Photonics and Laser Technology, Siberian Federal University, Krasnoyarsk, 660079, Russian Federation

Доп.точки доступа:
Arkhipkin, V. G.; Архипкин, Василий Григорьевич; Вьюнышев, Андрей Михайлович
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    The anisotropic thermal expansion of non-linear optical crystal BaAlBO3F2 below room temperature / X. X. Jiang [et al.] // Front. Chem. - 2018. - Vol. 6. - Ст. 252, DOI 10.3389/fchem.2018.00252. - Cited References: 31. - This work was supported by the National Scientific Foundations of China (Grants 11474292, 51702330, 11611530680, 91622118, and 91622124), Russian Foundation for Basic Research (Grant 17-52-53031), the Special Foundation of the Director of Technical Institute of Physics and Chemistry (TIPC) and the Youth Innovation Promotion Association, CAS (outstanding member for ZL and Grant 2017035 for XJ). . - ISSN 2296-2646
   Перевод заглавия: Анизотропное тепловое расширение ниже комнатной температуры нелинейнооптического кристалла BaAlBO3F2

РУБ Chemistry, Multidisciplinary
Рубрики:
LASER
   GENERATION
   PSEUDOPOTENTIALS
   COEFFICIENTS
   YAG
Кл.слова (ненормированные):
BABF -- anisotropic thermal expansion -- phonon stimulation -- NLO optical -- property -- low temperature
Аннотация: Thermal expansion is a crucial factor for the performance of laser devices, since the induced thermal stress by laser irradiation would strongly affect the optical beam quality. For BaAlBO3F2 (BABF), a good non-linear optical (NLO) crystal, due to the highly anisotropic thermal expansion its practical applications are strongly affected by the “tearing” stress with the presence of local overheating area around the laser spot. Recently, the strategy to place the optical crystals in low-temperature environment to alleviate the influence of the thermal effect has been proposed. In order to understand the prospect of BABF for this application, in this work, we investigated its thermal expansion behavior below room temperature. The variable-temperature XRD showed that the ratio of thermal expansion coefficient between along c- and along a(b)- axis is high as 4.5:1 in BABF. The Raman spectrum combined with first-principles phonon analysis revealed that this high thermal expansion anisotropy mainly ascribe to progressive stimulation of the respective vibration phonon modes related with the thermal expansion along a(b)- and c-axis. The good NLO performance in BABF can be kept below room temperature. The work presented in this paper provides an in-depth sight into the thermal expansion behavior in BABF, which, we believe, would has significant implication to the manipulation in atomic scale on the thermal expansion of the materials adopted in strong-field optical facility.

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Держатели документа:
Chinese Acad Sci, Tech Inst Phys & Chem, Beijing, Peoples R China.
Univ Chinese Acad Sci, Beijing, Peoples R China.
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Lab Crystal Phys, Krasnoyarsk, Russia.
Far Eastern State Transport Univ, Dept Phys, Khabarovsk, Russia.
Siberian Fed Univ, Dept Engn Phys & Radioelect, Krasnoyarsk, Russia.
Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Cryogen, Beijing, Peoples R China.
Tianjin Univ Technol, Inst Funct Crystals, Tianjin, Peoples R China.

Доп.точки доступа:
Jiang, Xingxing; Wang, Naizheng; Molokeev, M. S.; Молокеев, Максим Сергеевич; Wang, Wei; Guo, Shibin; Huang, Rongjin; Li, Laifeng; Hu, Zhanggui; Lin, Zheshuai
}
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Popov, A. K.
Generation, amplification, frequency conversion, and reversal of propagation of THz photons in nonlinear hyperbolic metamaterial / A. K. Popov, S. A. Myslivets // Opt. Lett. - 2017. - Vol. 42, Is. 20. - P. 4151-4154, DOI 10.1364/OL.42.004151. - Cited References: 13. - Army Research Office (ARO) (W911NF-14-1-0619); Russian Foundation for Basic Research (RFBR) (15-02-03959A). The authors thank I. S. Nefedov for helpful discussions. . - ISSN 0146-9592
Кл.слова (ненормированные):
Carbon -- Metamaterials -- Optical frequency conversion -- Photons -- Terahertz waves -- Yarn -- Directed energy -- Electromagnetic modes -- Entangled photons -- Nonlinear hyperbolic -- Optical parametric amplification -- Proof of principles -- Three wave mixing -- THz photon -- Optical parametric amplifiers
Аннотация: We propose metamaterial (MM) that supports a mixture of three or more normal and backward electromagnetic modes with equal co-directed phase velocities and mutually contra-directed energy fluxes. This enables extraordinary three-wave mixing, greatly enhanced optical parametric amplification, and frequency-changing generation of entangled photons in the reflection direction. Proof-of-principle numerical simulation of such processes is presented based on the particular example of the wave-guided terahertz waves contra-propagating in the MM made of carbon nanotubes.

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Держатели документа:
Birck Nanotechnology Center, Purdue University, West Lafayette, IN, United States
Kirensky Institute of Physics, Federal Research Center KSC, SB RAS, 50, Akademgorodok, Krasnoyarsk, Russian Federation
Siberian Federal University, 79 Svobodny Av., Krasnoyarsk, Russian Federation

Доп.точки доступа:
Myslivets, S. A.; Мысливец, Сергей Александрович
}
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Multiple nonlinear Bragg diffraction of femtosecond laser pulses in a χ(2) photonic lattice with hexagonal domains / A. M. Vyunishev [et al.] // Laser Phys. Lett. - 2018. - Vol. 15, Is. 4. - Ст. 045401, DOI 10.1088/1612-202X/aaa618. - Cited References:26. - The work was supported by the Russian Foundation for Basic Research through grant 15-02-03838. ISB, ARA and VYS acknowledge the support of the Government of the Russian Federation (Act 211, Agreement 02.A03.21.0006). . - ISSN 1612-2011. - ISSN 1612-202X

РУБ Optics + Physics, Applied
Рубрики:
RAMAN-NATH DIFFRACTION
STRUCTURED FUNDAMENTAL WAVE
2ND-HARMONIC
Кл.слова (ненормированные):
nonlinear Bragg diffraction -- nonlinear photonic lattice -- second harmonic -- generation -- femtosecond pulses
Аннотация: The frequency doubling of femtosecond laser pulses in a two-dimensional (2D) rectangular nonlinear photonic lattice with hexagonal domains is studied experimentally and theoretically. The broad fundamental spectrum enables frequency conversion under nonlinear Bragg diffraction for a series of transverse orders at a fixed longitudinal quasi-phase-matching order. The consistent nonstationary theory of the frequency doubling of femtosecond laser pulses is developed using the representation based on the reciprocal lattice of the structure. The calculated spatial distribution of the second-harmonic spectral intensity agrees well with the experimental data. The condition for multiple nonlinear Bragg diffraction in a 2D nonlinear photonic lattice is offered. The hexagonal shape of the domains contributes to multibeam second harmonic excitation. The maximum conversion efficiency for a series of transverse orders in the range 0.01%-0.03% is obtained.

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Держатели документа:
Kirensky Inst Phys, Fed Res Ctr KSC SB RAS, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Dept Photon & Laser Technol, Krasnoyarsk 660079, Russia.
Siberian Fed Univ, Inst Nanotechnol Spect & Quantum Chem, Krasnoyarsk 660079, Russia.
Ural Fed Univ, Sch Nat Sci & Math, Ekaterinburg 620000, Russia.
Labfer Ltd, Ekaterinburg 620014, Russia.
Moscow MV Lomonosov State Univ, Fac Phys, Moscow 119992, Russia.
Moscow MV Lomonosov State Univ, Int Laser Ctr, Moscow 119992, Russia.

Доп.точки доступа:
Vyunishev, A. M.; Вьюнышев, Андрей Михайлович; Arkhipkin, V. G.; Архипкин, Василий Григорьевич; Baturin, I. S.; Akhmatkhanov, A. R.; Shur, V. Ya; Chirkin, A. S.; Russian Foundation for Basic Research [15-02-03838]; Government of the Russian Federation (Act 211) [02.A03.21.0006]
}
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    Effects of losses and phase mismatch on transient processes in optical parametric amplification through three-wave mixing of ordinary and backward electromagnetic waves / V. A. Tkachenko [et al.] // Progress in Electromagnetics Research Symposium - Fall : IEEE, 2017. - P. 720-723, DOI 10.1109/PIERS-FALL.2017.8293229. - Cited References:8. - This work was supported in parts by the Ministry of Education and Science of the Russian Federation (Grant 3.6341.2017/VU), by the Russian Foundation for Basic Research (RFBR) (Grant 16-32-00129), by the RFBR and the Government of Krasnoyarsk Territory (Grant 16-42-240410p_a), and by the Army Research Office (ARO) (Grant W911NF-14-1-0619).
Рубрики:
NEGATIVE-INDEX METAMATERIALS
   2ND-HARMONIC GENERATION
   OSCILLATOR
Аннотация: Three-wave mixing of ordinary electromagnetic waves and the waves with contra-directed phase and group velocities in the pulsed regimes is shown to be accompanied by unusual transient processes. We have investigated how attenuation and phase mismatch of the coupled waves in the metamaterials change the properties of parametric amplification and the threshold intensity of the pump wave which is of critical importance.

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Держатели документа:
Siberian Fed Univ, 79 Svobodny Ave, Krasnoyarsk 660041, Russia.
Russian Acad Sci, Siberian Branch, LV Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Purdue Univ, Birck Nanotechnol Ctr, 1205 W State Str, W Lafayette, IN 47907 USA.

Доп.точки доступа:
Tkachenko, Viktor A.; Tsipotan, Aleksey S.; Myslivets, S. A.; Мысливец, Сергей Александрович; Slabko, Vitaly V.; Popov, A. K.; Попов, Александр Кузьмич; Ministry of Education and Science of the Russian Federation [3.6341.2017/VU]; Russian Foundation for Basic Research (RFBR) [16-32-00129]; Government of Krasnoyarsk Territory [16-42-240410p_a]; Army Research Office (ARO) [W911NF-14-1-0619]; RFBR; Progress in Electromagnetics Research Symposium(Nov 19-22, 2017 ; Singapore)
}
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Peschanskii, A. V.
Spectroscopic study of the TbAl3(BO3)4 single crystal: Raman and luminescence spectroscopy / A. V. Peschanskii, A. Y. Glamazda, I. A. Gudim // Физ. низких температур. - 2020. - Т. 46, Вып. 12. - С. 1437-1445. - Cited References: 20 . - ISSN 0132-6414. - ISSN 1816-0328

РУБ Physics, Applied
Рубрики:
SCATTERING
GENERATION
ND
Кл.слова (ненормированные):
TbAl3(BO3)4 -- vibrational spectrum -- electronic transitions -- Raman spectroscopy -- luminescence
Аннотация: The vibrational and luminescence properties of the TbAl3(BO3)4 single crystal were studied in the temperature range of 5–300 K. Raman spectra of the single crystal revealed 5 of 7 A1 and all E phonon modes predicted by the group-theory analysis. The splitting energy between the LO and TO components of polar E phonons is determined. A group of intense bands associated with the 5D4 → 7F0 electronic transition was observed in the energy range of 14520–14680 cm−1 of the luminescence spectra. The intensity of these bands decreases upon heating. At the same time, the bands which can be assigned with 5D4 → 7F6, 5D4 → 7F5, and 5D4 → 7F4 transitions were revealed in luminescence spectra at room temperature. The intensity of these bands is comparable to the intensity of the Raman spectrum of TbAl3(BO3)4. The observation of luminescence from the 5D4 multiplet (20600–20750 cm−1) upon excitation at λexc = 632.8 nm (15803 cm−1) and λexc = 532 nm (18797 cm−1) indicates strong nonlinear properties of the studied crystal. The structure of the main 7F6 multiplet of Tb+3 in the TbAl3(BO3)4 single crystal has been studied at 5 K by Raman spectroscopy. The energies of the electronic levels of 7F6 and 5D4 multiplets were determined from the luminescence spectra measured at 300 K.

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Переводная версия Peschanskii A. V. Spectroscopic study of the TbAl3(BO3)4 single crystal: Raman and luminescence spectroscopy [Текст] / A. V. Peschanskii, A. Y. Glamazda, I. A. Gudim // Low Temp. Phys. - 2020. - Vol. 46 Is. 12.- P.1223-1230

Держатели документа:
Natl Acad Sci Ukraine, B Verkin Inst Low Temp Phys & Engn, UA-61103 Kharkov, Ukraine.
RAS, Siberian Branch, LV Kirensky Inst Phys, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Glamazda, A. Yu.; Gudim, I. A.; Гудим, Ирина Анатольевна
}
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Sadreev, A. F.
Interference traps waves in an open system: bound states in the continuum / A. F. Sadreev // Rep. Prog. Phys. - 2021. - Vol. 84, Is. 5. - Ст. 055901, DOI 10.1088/1361-6633/abefb9. - Cited References: 154. - The work was partially supported by Russian Foundation for Basic Research Projects No. 19-02-00055 . - ISSN 0034-4885. - ISSN 1361-6633

РУБ Physics, Multidisciplinary
Рубрики:
FANO RESONANCES
   2ND-HARMONIC GENERATION
   QUANTUM-SYSTEMS
   UNIFIED THEORY
Кл.слова (ненормированные):
bound states in the continuum -- wave localization in one-dimensional wires -- open microwave and acoustic resonators -- effective non Hermitian Hamiltonian
Аннотация: I review the four mechanisms of bound states in the continuum (BICs) in the application of microwave and acoustic cavities open to directional waveguides. The most simple are symmetry-protected BICs, which are localized inside the cavity because of the orthogonality of the eigenmodes to the propagating modes of waveguides. However, the most general and interesting is the Friedrich-Wintgen mechanism, when the BICs are the result of the fully destructive interference of outgoing resonant modes. The third type of BICs, Fabry-Perot BICs, occurs in a double resonator system when each resonator can serve as an ideal mirror. Finally, the accidental BICs can be realized in the open cavities with no symmetry like the open Sinai billiard in which the eigenmode of the resonator can become orthogonal to the continuum of the waveguide accidentally due to a smooth deformation of the eigenmode. We also review the one-dimensional systems in which the BICs occur owing to the fully destructive interference of two waves separated by spin or polarization or by paths in the Aharonov-Bohm rings. We make broad use of the method of effective non-Hermitian Hamiltonian equivalent to the coupled mode theory, which detects BICs by finding zero-width resonances.

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Держатели документа:
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Садреев, Алмаз Фаттахович; Russian Foundation for Basic Research Projects [19-02-00055]
}
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10.

3D optical vortex lattices / D. A. Ikonnikov, S. A. Myslivets, V. G. Arkhipkin, A. M. Vyunishev // Ann. Phys.-Berlin. - 2021. - Vol. 533, Is. 7. - Ст. 2100114, DOI 10.1002/andp.202100114. - Cited References: 29. - This work was supported by the Russian Science Foundation (Grant No. 19-12-00203).The surface grating was fabricated and characterized at the Center for Collective Use of the Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences. The authors thank M. N. Volochaev and A. I. Zaitsev for help . - ISSN 0003-3804. - ISSN 1521-3889

РУБ Physics, Multidisciplinary
Рубрики:
MANIPULATION
   PARTICLES
   ARRAY
   BEAMS
   GENERATION
   TRANSPORT
   VORTICES
Кл.слова (ненормированные):
optical lattices -- optical vortices -- Talbot effect
Аннотация: Fresnel diffraction of light beams with a topological charge on a 2D regular amplitude transparency mask is studied. Numerical predictions show that the 3D optical lattices of optical vortices can be formed using the Talbot effect, with these predictions confirmed by the experimental reconstruction of all 3D optical vortex lattices. The periodicity of the 3D optical vortex lattices is determined by the light wavelength and periodicity of a transparency mask. Furthermore, it is shown that the optical vortices are created and annihilated during light propagation behind the mask with the preservation of the total topological charge. The 3D optical vortex lattices are considered to be tolerant to the perturbations induced by trapped particles caused by the features of the Talbot effect. The 3D optical vortex lattices open new possibilities for light-matter interactions and the related applications.

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Держатели документа:
RAS, Fed Res Ctr KSC SB, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Inst Engn Phys & Radio Elect, Krasnoyarsk 660041, Russia.

Доп.точки доступа:
Ikonnikov, D. A.; Иконников, Денис Андреевич; Myslivets, S. A.; Мысливец, Сергей Александрович; Arkhipkin, V. G.; Архипкин, Василий Григорьевич; Vyunishev, A. M.; Вьюнышев, Андрей Михайлович; Russian Science FoundationRussian Science Foundation (RSF) [19-12-00203]
}
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11.

Peschanskii, A. V.
Spectroscopic study of the TbAl3(BO3)4 single crystal: Raman and luminescence spectroscopy / A. V. Peschanskii, A. Y. Glamazda, I. A. Gudim // Low Temp. Phys. - 2020. - Vol. 46, Is. 12. - P. 1223-1230, DOI 10.1063/10.0002478. - Cited References: 20 . - ISSN 1063-777X. - ISSN 1090-6517

Публикация в журнале "Физика низких температур" Peschanskii A. V. Spectroscopic study of the TbAl3(BO3)4 single crystal: Raman and luminescence spectroscopy [Текст] / A. V. Peschanskii, A. Y. Glamazda, I. A. Gudim // Физ. низких температур. - 2020. - Т. 46 Вып. 12.- С.1437-1445

12.

Temperature dependence of the spontaneous polarization, acoustic and strain anomalies in strontium barium niobate crystals of different chemical compositions probed by the second harmonic generation technique / A. M. Pugachev, I. V. Zaytseva, V. K. Malinovsky [et al.] // Ferroelectrics. - 2020. - Vol. 560, Is. 1. - P. 54-60, DOI 10.1080/00150193.2020.1722883. - Cited References: 19. - This work was supported by the Russian Foundation for Basic Research, projects no. 18-02-00399 and 19-42-543-016 and State assignment No AAAA-A17-117052410033-9. . - ISSN 0015-0193. - ISSN 1563-5112

РУБ Materials Science, Multidisciplinary + Physics, Condensed Matter
Рубрики:
SINGLE-CRYSTALS
RELAXOR
GROWTH
Кл.слова (ненормированные):
SBN-x crystals -- polar regions -- ferroelectric phase transition -- second harmonic generation -- Brillouin spectroscopy
Аннотация: In SrxBa1-xNb2O6 crystals (x = 0.33, 0.5, 0.61, and 0.75), temperature dependences of spontaneous polarization, strain, elastic modules, and second harmonic generation (SHG) signal are compared. It is revealed that SHG describes the temperature dependences of dipole moments in polar nanoregions in paraelectric phase. In the vicinity of the phase transition in paraelectric phase, SHG reflects the temperature behavior of relatively large and long-lived polar asymmetric regions as indicated by the presence of the intermediate temperature range on the temperature dependence of this nonlinear response.

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Держатели документа:
Russian Acad Sci, Inst Automat & Electrometry, Novosibirsk, Russia.
Kirensky Inst Phys Fed Res Ctr KSC SB RAS, Krasnoyarsk, Russia.
Siberian Fed Univ, Inst Engn Phys & Radioelect, Krasnoyarsk, Russia.
Russian Acad Sci, Prokhorov Gen Phys Inst, Moscow, Russia.

Доп.точки доступа:
Pugachev, A. M.; Zaytseva, I., V; Malinovsky, V. K.; Surovtsev, N., V; Gorev, M. V.; Горев, Михаил Васильевич; Ivleva, L. I.; Lykov, P. A.; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [18-02-00399, 19-42-543-016, AAAA-A17-117052410033-9]
}
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13.

    Small-angle scattering applications to the analysis of aptamer structure and conformational changes / R. V. Moryachkov, V. N. Zabluda, A. N. Berlina [et al.] // AIP Conference Proceedings : book of abstracts. - 2020. - Vol. 2299. - Ст. 040002 ; Synchrotron and free electron laser radiation: generation and application (SFR-2020). - Novosibirsk. - P. 45-46, DOI 10.1063/5.0030394. - Cited References: 40. - The reported study was funded by RFBR, project number 19-32-90266 (investigation of the structure changes). This work was financially supported by Russian Science Foundation (project # 19-44-02020, obtaining of the complexes of aptamer and lead ions). We acknowledge the European Synchrotron Radiation Facility for provision of synchrotron radiation facilities (experiment #MX-2039) and we would like to thank Bart Van Laer for assistance in using beamline BM29
   Перевод заглавия: Использование малоуглового рассеяния для анализа структуры и конформационных изменений аптамеров
Аннотация: Aptamers, structured single-chain oligonucleotides, are promising tools for detection of a wide variety of compounds, from high to low molecular weight, and affecting on them. The aptamers that are most affine for a detectable compound are selected from the libraries of random sequences by the SELEX method (Systematic evolution of ligands by exponential enrichment). The reason why aptamers deserve a special consideration lies in the specific features of their structure and the mechanism of binding to their target. Aptamers can be exploited for metal-ion sensing, biosensing, drug delivery and other functions. To apply the oligonucleotides in the medicine, ecology, food production, agriculture, etc., we need to know how the aptamers bind to their targets, how they change their conformation upon specific binding and how the environment influences on the affinity of aptamers. Small-Angle X-ray scattering showed that the interaction of aptamers with heavy metal and other divalent ions proceeds according to different mechanisms, and the aptamers used undergo different conformational changes.

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Держатели документа:
Kirensky Institute of Physics, Akademgorodok 50, bld. 38, Krasnoyarsk, 660012, Russian Federation
Federal Research Center "Krasnoyarsk Science Center SB RAS", Akademgorodok 50, Krasnoyarsk, 660012, Russian Federation
A.N. Bach Institute of Biochemistry, Research Center of Biotechnology of the Russian Academy of Sciences, Leninsky pr. 33, Moscow, 119071, Russian Federation
National Research Center “Kurchatov Institute”, Akademika Kurchatova pl. 1, Moscow, 123182, Russian Federation

Доп.точки доступа:
Moryachkov, R. V.; Морячков, Роман Владимирович; Zabluda, V. N.; Заблуда, Владимир Николаевич; Berlina, A. N.; Peters, G. S.; Kichkailo, A. S.; Sokolov, A. Е.; Соколов, Алексей Эдуардович; Internetional Conference on Synchrotron and Free Electron Laser Radiation: Generation and Application(2020 ; 13-16 July ; Novosibirsk)

}
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14.

    A New Nonlinear Optical Selenide Crystal AgLiGa2Se4 with Good Comprehensive Performance in Mid-Infrared Region / A. Yelisseyev, S. Lobanov, M. Molokeev [et al.] // Adv. Opt. Mater. - 2021. - Vol. 9, Is. 5. - Ст. 2001856, DOI 10.1002/adom.202001856. - Cited References: 32. - Crystal growth and investigation of physical properties were supported by Russian Science Foundation, Russia (#19‐12‐00085). Spectroscopic data were obtained at the Institute of Geology and Mineralogy, Siberian Branch of Russian Academy of Sciences, Russia; Ministry of Science and Higher Education, Russia (performed on a state assignment). The work on first‐principles calculations also supported by National Science Foundation in China (No.51872297) and Fujian Institute of Innovation (FJCXY18010201) in Chinese Academy of Sciences . - ISSN 2195-1071
   Перевод заглавия: Новый нелинейно-оптический кристалл селенида AgLiGa2Se4 с хорошими комплексными характеристиками в средней инфракрасной области
Кл.слова (ненормированные):
crystal growth -- first principles calculations -- inorganic functional materials -- laser damage threshold -- second harmonic generation
Аннотация: Mid‐infrared (mid‐IR) nonlinear optical (NLO) crystals are indispensable for the mid‐IR lasers generation with tunable wavelengths from 3 to 20 µm. AgGaSe2 is a commercial mid‐IR NLO crystal with the highest figures of merit, but suffers low laser damage threshold (LDT). To achieve the balance of optical transmission, NLO effect, and LDT, it is proposed to molecularly modify the AgGaSe2 structure by introducing the [LiSe4] tetrahedra, and successfully grow large crystals of a new selenide AgLiGa2Se4. The replacement of half of the heavy Ag+ cations with light Li+ increases the band gap to 2.2 eV (vs. 1.7 eV in AgGaSe2). The LDT value in AgLiGa2Se4 increases five times compared to that in AgGaSe2, while keeping a relatively large NLO susceptibility of 26 pm V−1. Moreover, the thermal expansion coefficients in AgLiGa2Se4 are approximately two times lower in absolute value compared with AgGaSe2, which is beneficial to the large crystal growth. All these advantages would make AgLiGa2Se4 a new promising NLO crystal for mid‐IR laser applications.

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Держатели документа:
Laboratory of Lithospheric Mantle and Diamond Deposits, Laboratory of Crystal Growth, Sobolev Institute of Geology and Mineralogy SB RAS, Novosibirsk, 630090, Russian Federation
Department of Physics Laboratory of Functional materials, Novosibirsk State University, Novosibirsk, 630090, Russian Federation
Laboratory of Crystal Physics, Kirensky Institute of Physics SB RAS, Krasnoyarsk, 660036, Russian Federation
Department of Physics, Far Eastern State Transport University, Khabarovsk, 680021, Russian Federation
Department of Engineering Physics and Radioelectronic, Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Technical Institute of Physics and Chemistry CAS, Beijing, 100190, China
University of Chinese Academy of Sciences, Beijing, 100190, China
Laboratory of Condensed Matter Spectroscopy, Institute of Automation and Electrometry SB RAS, Novosibirsk, 630090, Russian Federation

Доп.точки доступа:
Yelisseyev, A.; Lobanov, S.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Zhang, S.; Pugachev, A.; Lin, Z.; Vedenyapin, V.; Kurus, A.; Khamoyam, A.; Isaenko, L.
}
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15.

Popov, A. K.
Hyperbolic carbon nanoforest for phase matching of ordinary and backward electromagnetic waves: Second harmonic generation / A. K. Popov, I. S. Nefedov, S. A. Myslivets // ACS Photonics. - 2017. - Vol. 4, Is. 5. - P. 1240-1244, DOI 10.1021/acsphotonics.7b00146. - Cited References: 14. - This material is based on work supported in part by the U.S. Army Research Laboratory through the U.S. Army Research Office under Grant Number W911NF-14-1-0619 and by the Russian Foundation for Basic Research under Grant RFBR 15-02-03959A. . - ISSN 2330-4022
Кл.слова (ненормированные):
backward electromagnetic waves -- carbon nanotubes -- hyperbolic metamaterials -- second harmonic generation
Аннотация: We show that a deliberately engineered dispersive metamaterial slab can enable the coexistence and phase matching of ordinary fundamental and contra-propagating backward second harmonic electromagnetic waves. Energy flux and phase velocity are contra-directed in the backward waves, which is the extraordinary phenomenon that gives rise to unique nonlinear optical propagation processes. We demonstrate that frequencies, phase, and group velocities, as well as the losses inherent to the guided electromagnetic modes supported by such metamaterial, can be tailored to maximize the conversion of frequencies and to reverse the propagation direction of the generated second harmonic wave. Such a possibility, which is of paramount importance for nonlinear photonics, is proven using a numerical model describing the hyperbolic metamaterial made of carbon nanotubes standing on the metal surface. Extraordinary properties of the backward-wave second harmonic generation in the reflection direction and of the corresponding frequency doubling metareflector in the THz are investigated with a focus on the pulsed regime. © 2017 American Chemical Society.

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Держатели документа:
Birck Nanotechnology Center, Purdue University, West Lafayette, IN, United States
Aalto University, School of Electrical Engineering, P.O. Box 13000, Aalto, Finland
Laboratory Nanooptomechanics, ITMO University, St. Petersburg, Russian Federation
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation
Siberian Federal University, 79 Svobodny pr., Krasnoyarsk, Russian Federation

Доп.точки доступа:
Nefedov, I. S.; Myslivets, S. A.; Мысливец, Сергей Александрович
}
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16.

9th-order nonlinear polarization and VUV generation in HG vapor / V. F. Lukinykh [et al.] // Appl. Phys. B. - 1984. - Vol. 34, Is. 3. - P. 171-173, DOI 10.1007/BF00697511. - Cited References: 13 . - ISSN 0721-7269

РУБ Physics, Applied

Кл.слова (ненормированные):
42.65 -- 42.80 -- LIGHT - Nonlinear Optical Effects -- VAPORS -- MERCURY AND AMALGAMS

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Держатели документа:
L. V. Kirensky Institute of Physics, USSR Academy of Sciences, Siberian Branch, Krasnoyarsk, SU-660036, Russia
Krasnoyarsk State University, Krasnoyarsk, Russia

Доп.точки доступа:
Lukinykh, V. F.; Myslivets, S. A.; Мысливец, Сергей Александрович; Popov, A. K.; Попов, Александр Кузьмич; Slabko, V. V.; Слабко, Виталий Васильевич
}
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17.

Laser-induced non-linear resonances in the continuum at 3rd-harmonic generation in na vapor / S. S. Dimov [et al.] // Appl. Phys. B. - 1983. - Vol. 30, Is. 1. - P. 35-40, DOI 10.1007/BF00692656. - Cited References: 18 . - ISSN 0721-7269

РУБ Physics, Applied

Кл.слова (ненормированные):
32.10VC -- 42.65-k -- 42.80Qy -- LASER BEAMS - Effects -- HARMONIC GENERATION

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Scopus
Держатели документа:
LV KIRENSKII PHYS INST,KRASNOYARSK 660036,USSR
ИФ СО РАН
Physical Department, Sofia University, Sofia, BG-1126, Bulgaria
Siberian Branch, L. V. Kirensky Institute of Physics, USSR Academy of Sciences, Krasnoyarsk, SU-660036, Russia

Доп.точки доступа:
Dimov, S. S.; Pavlov, L. I.; Stamenov, K. V.; Heller, Y. I.; Popov, A. K.; Попов, Александр Кузьмич
}
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18.

Study of optical 2nd harmonic-generation in ferroelectric liquid-crystal / A. N. Vtyurin [et al.] // Phys. Status Solidi B. - 1981. - Vol. 107, Is. 2. - P. 397-402, DOI 10.1002/pssb.2221070202. - Cited References: 14 . - ISSN 0370-1972

РУБ Physics, Condensed Matter

WOS
Доп.точки доступа:
Vtyurin, A. N.; Втюрин, Александр Николаевич; Ermakov, V. P.; Ostrovskii, B. I.; Shabanov, V. F.; Шабанов, Василий Филиппович
}
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19.

Resonant generation of even-order harmonics in metal vapors / V. A. Kiyashko [et al.] // Appl. Phys. B. - 1985. - Vol. 36, Is. 1. - P. 53-54, DOI 10.1007/BF00698036. - Cited References: 14 . - ISSN 0721-7269

РУБ Physics, Applied

WOS
Доп.точки доступа:
Kiyashko, V. A.; Popov, A. K.; Попов, Александр Кузьмич; Timofeev, V. P.; Makarov, N. P.; Epstein, V. S.
}
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20.

Patrin, G. S.
Detection of magneto-dependent higher harmonics in htsc ceramics via the change of the low field microwave response under the passing of an alternating-current / G. S. Patrin, G. A. PETRAKOVSKII, I. E. KHARITONOV // Phys. Lett. A. - 1991. - Vol. 158, Is. 3-4. - P. 167-170, DOI 10.1016/0375-9601(91)90921-T. - Cited References: 15 . - ISSN 0375-9601

РУБ Physics, Multidisciplinary
Рубрики:
BA-CU-O
GENERATION
STATE
Аннотация: The results of an investigation on the generation of higher harmonics under the passing of a low frequency current in HTSC ceramics by microwave spectroscopy methods are presented. It is found that the generation of only even harmonics occurs. The dependence of the signal upon the harmonic number and. as an example for the second harmonic, the temperature dependences of the microwave response parameters are discussed.

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Доп.точки доступа:
PETRAKOVSKII, G. A.; Петраковский, Герман Антонович; KHARITONOV, I. E.; Патрин, Геннадий Семёнович
}
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