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A Photonic Crystal with Raman Defect [Text] / V.G, Arkhipkin, S. A. Myslivets // Technical digest International conference ICONO/LAT 2010. - Казань, 2010. - Ст. LTuH6

Доп.точки доступа:
Arkhipkin, V.G,; Myslivets, S.A.; International Conference on Coherent and Nonlinear Optics(2010 ; Aug. ; 23-26 ; Казань); International Conference on Lasers, Applications, and Technologies(2010 ; Aug. ; 23-26 ; Казань)
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A Raman scattering study of the phase transition in the ammonium oxyfluoride (NH4)(3)TiOF5 / Y. V. Gerasimova [et al.] // Phys. Solid State. - 2008. - Vol. 50, Is. 8. - P. 1534-1537, DOI 10.1134/S1063783408080246. - Cited References: 8 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
(NH4)(3)WO3F3 OXYFLUORIDE
Аннотация: Raman spectra of a polycrystalline sample of the perovskite-like oxyfluoride (NH4)(3)TiOF5 are measured in the frequency region 100-3600 cm(-1) at temperatures ranging from 91 to 370 K under hydrostatic pressures of up to 9 GPa, which include the range of the phase transition from the orientationally disordered cubic phase to the low-symmetry phase. Anomalies in the spectral parameters due to the phase transition are revealed in the range of vibrations of TiOF5 octahedral groups.

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Держатели документа:
[Gerasimova, Yu. V.
Krylov, A. S.
Vtyurin, A. N.] Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
[Gerasimova, Yu. V.
Krylov, A. S.
Vtyurin, A. N.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
[Laptash, N. M.] Russian Acad Sci, Inst Chem, Far E Branch, Vladivostok 690022, Russia
[Goryainov, S. V.] Inst Mineral & Petrog, Siberian Branch, Novosibirsk 630090, Russia
ИФ СО РАН
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50, Krasnoyarsk 660036, Russian Federation
Siberian Federal University, Svobodnyi pr. 79, Krasnoyarsk 660041, Russian Federation
Institute of Chemistry, Far-East Branch, Russian Academy of Sciences, pr. Stoletiya Vladivostoka 159, Vladivostok 690022, Russian Federation
Institute of Mineralogy and Petrography, Siberian Branch, Universitetskii pr. 3, Novosibirsk 630090, Russian Federation

Доп.точки доступа:
Gerasimova, Y. V.; Герасимова, Юлия Валентиновна; Krylov, A. S.; Крылов, Александр Сергеевич; Vtyurin, A. N.; Втюрин, Александр Николаевич; Laptash, N. M.; Goryainov, S. V.
}
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A raman study of hydrostatic pressure induced phase transitions in Rb2KInF6 crystals / A. N. Vtyurin [et al.] // Phys. Solid State. - 2012. - Vol. 54, Is. 5. - P. 934-936, DOI 10.1134/S1063783412050472. - Cited References: 16. - This study was supported by the Russian Foundation for Basic Research (project nos. 11-02-98002-r_sibir' and 09-02-00062), the Siberian Branch of the Russian Academy of Sciences (integration project no. 101), and the Council on Grants from the President of the Russian Federation (grant no. HSh-4645.2010.2). . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
LATTICE-DYNAMICS
ELPASOLITES
SPECTRA
Аннотация: The Raman spectra of the elpasolite (Rb2KInF6) crystal have been studied in the pressure range from 0 to 5.3 GPa at a temperature of 295 K. A phase transition at a pressure of approximately 0.9 GPa has been found. An analysis of the variations in the spectral parameters has led to the conclusion that the phase transition to a distorted phase is accompanied by the doubling of the volume of the primitive cell of the initial cubic phase. Numerical calculations of the lattice dynamics in the Rb2KInF6 crystal have been performed. The numerical simulation has established that the phase transition at a pressure of 0.9 GPa is associated with condensation of the F (lg) mode. A probable high-pressure phase is the phase with space group C2/m.

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Публикация на русском языке Исследование фазовых переходов в кристалле Rb2KInF6, индуцированных гидростатическим давлением, методом комбинационного рассеяния света // Физика твердого тела : Физико-технический институт им. А.Ф.Иоффе РАН, 2012. - Т. 54, Вып. 5. - С. 880-882. - ISSN 0367-3294

Держатели документа:
[Vtyurin, A. N.
Krylov, A. S.
Krylova, S. N.
Oreshonkov, A. S.
Voronov, V. N.] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
[Goryainov, S. V.] Russian Acad Sci, Siberian Branch, Inst Mineral & Petrog, Novosibirsk 630090, Russia

Доп.точки доступа:
Vtyurin, A. N.; Втюрин, Александр Николаевич; Krylov, A. S.; Крылов, Александр Сергеевич; Goryainov, S. V.; Горяйнов, Сергей Владимирович; Krylova, S. N.; Крылова, Светлана Николаевна; Oreshonkov, A. S.; Орешонков, Александр Сергеевич; Voronov, V. N.; Воронов, Владимир Николаевич
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A study of phase transition in (NH4)(3)WO3F3 oxyfluoride by Raman scattering / A. S. Krylov [et al.] // Phys. Status Solidi B. - 2006. - Vol. 243, Is. 2. - P. 435-441, DOI 10.1002/pssb.200541259. - Cited References: 11 . - ISSN 0370-1972

РУБ Physics, Condensed Matter
Рубрики:
ELPASOLITE RB2KSCF6
Аннотация: Raman scattering spectra of perovskite-like (NH4)(3)WO3F3 oxyfluoride are studied in the 70-3600 cm(-1) frequency range and the 93-323 K temperature range including the transition point from orientationally disordered cubic phase into the lower symmetry one. Internal vibrations of ammonium ions and WO3F3 octahedra have been found to exhibit transition anomalies. Analysis of measurements suggests that the transition under study is due mainly to the ordering of octahedra.

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Держатели документа:
Kirensky Inst Phys, Krasnoyarsk 660036, Russia
Inst Chem, Vladivostok 690022, Russia
ИФ СО РАН
Kirensky Institute of Physics, 660036 Krasnoyarsk, Russian Federation
Institute of Chemistry, 690022 Vladivostok, Russian Federation

Доп.точки доступа:
Krylov, A. S.; Крылов, Александр Сергеевич; Gerasimova, J. V.; Герасимова, Юлия Валентиновна; Vtyurin, A. N.; Втюрин, Александр Николаевич; Fokina, V. D.; Фокина, Валентина Дмитриевна; Laptash, N. M.; Voyt, E. I.
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Aleksandrov, K. S.
Spectroscopic investigation of phase transitions in CsLiMoO//4 crystals. / K. S. Aleksandrov, Yu. N. Ivanov, A. D. Schafer // Ferroelectrics. - 1983. - Vol. 55, Is. 1. - P. 671-674 . - ISSN 0015-0193
Кл.слова (ненормированные):
CRYSTALS - Structure -- MAGNETIC RESONANCE -- SPECTROSCOPY, RAMAN -- CESIUM LITHIUM MOLYBDATE -- PHASE TRANSITIONS -- FERROELECTRIC MATERIALS
Аннотация: Raman and NMR spectra in cubic and two distorted phases of CsLiMoO//4 have been studied. Phase transitions in the crystal are shown to belong to order-disorder type.

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Доп.точки доступа:
Ivanov, Y. N.; Иванов, Юрий Николаевич; Schafer, A. D.; Александров, Кирилл Сергеевич; European Meeting on Ferroelectricity(5 ; 1983 ; Sept. ; 26-30 ; Malaga, Sp)
}
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Aleksandrov, K. S.
Structural distortions in families of perovskite-like crystals / K. S. Aleksandrov, J. . Bartolome // Phase Transit. - 2001. - Vol. 74, Is. 3. - P. 255-335, DOI 10.1080/01411590108228754. - Cited References: 262 . - ISSN 0141-1594

РУБ Crystallography + Physics, Condensed Matter
Рубрики:
LOW-TEMPERATURE PHASE
   INELASTIC-NEUTRON-SCATTERING
   POWDER PROFILE REFINEMENT
   MII = CO
   X-RAY
   RAMAN-SCATTERING
   ORDERED PEROVSKITE
   RHOMBOHEDRAL PEROVSKITES
   RB2KMIIIF6 ELPASOLITES
   MAGNETIC-PROPERTIES
Кл.слова (ненормированные):
structural phase transitions -- perovskites -- perovskite-like crystals -- group theoretical classification
Аннотация: The crystallographic and group theoretical analysis of the structural phase transitions in perovskite and perovskite-like crystals is reviewed. We include ABX(3) perovskites and their relative crystals of ReO3 type (G(0) = O-h(1)), elpasolites, cryolites and their relatives (G(0) = O-h(5)) layered crystals of TIAIF(4) series (G(0) = D-4h(1)), Aurivillius and Ruddlesden-Popper series (G(0) = D-4h(17)). The structures in their initial phase G(0) often contain n layers (n = 1, 2,3) of vertex linked octahedra. The distorted phases produced by one kind of tilt and by superposition of tilts in the slabs are enumerated. Most of the tilts correspond to symmetry changes, which can be associated to definite librational lattice modes irreducible representations of the G(0) group. The softening of modes associated to the PT has been found experimentally in many perovskites, elpasolites and layered crystals with n = 1. In contrast, no such soft modes have been found yet for even-layered (n = 2) crystals. Examples of successive phase transitions due to the superposition of tilts in these types of crystals have been collected.

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Держатели документа:
LV Kirenskii Inst Phys, Siberian Branch, Russian Acad Sci, Krasnoyarsk 660036, Russia
Univ Zaragoza, CSIC, Inst Ciencias Mat Aragon, Zaragoza, Spain
ИФ СО РАН

Доп.точки доступа:
Bartolome, J.; Александров, Кирилл Сергеевич
}
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Analyzing the symmetry of the Raman spectra of crystals according to angular dependences / E. V. Golovkina, S. N. Krylova, A. N. Vtyurin, A. S. Krylov // Bull. Russ. Acad. Sci. Phys. - 2024. - Vol. 88, Is. 5. - P. 773-778, DOI 10.1134/S1062873824706573. - Cited References: 32. - This work was supported by the Russian Foundation for Basic Research, project no. 21-52-12018. The authors are grateful to Dr. Irena Senkovska for providing our DUT-8(Ni) samples . - ISSN 1062-8738. - ISSN 1934-9432
Кл.слова (ненормированные):
angular dependences of Raman scattering -- metal–organic framework crystals
Аннотация: The authors propose a way of reconstructing the Raman tensor by studying the angular dependences of the intensities of the Raman lines of unoriented microcrystals. The technique is verified using familiar calomel Hg2Cl2 crystals. It is shown that the lines on DUT-8 (Ni) crystals indicating phases with open and closed pores have different types of symmetries. The technique can be used to reconstruct the Raman tensor for any unoriented crystalline sample.

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Держатели документа:
Kirensky Institute of Physics, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, 660036, Krasnoyarsk, Russia
Siberian Federal University, 660041, Krasnoyarsk, Russia

Доп.точки доступа:
Golovkina, E. V.; Головкина, Елена Вячеславовна; Krylova, S. N.; Крылова, Светлана Николаевна; Vtyurin, A. N.; Втюрин, Александр Николаевич; Krylov, A. S.; Крылов, Александр Сергеевич
}
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Anharmonicity and local noncentrosymmetric regions in BaTiO3 pressed powder studied by the Raman line temperature dependence / A. M. Pugachev, I. V. Zaytseva, N. V. Surovtsev, A. S. Krylov // Ceram. Int. - 2020. - Vol. 46, Is. 14. - P. 22619-22623, DOI 10.1016/j.ceramint.2020.06.024. - Cited References: 26. - The reported study was funded by RFBR , according to the research project No. 18-02-00399 and 19-42-543-016 , Government of Novosibirsk region No. 19-42-543-016 and State assignment No AAAA-A17-117052410033-9. The experiments were performed in the multiple-access center “High-Resolution Spectroscopy of Gases and Condensed Matter” in IA&E SB RAS (Novosibirsk, Russia) and Center for Common Use of the Krasnoyarsk Scientific Center, SB RAS (Krasnoyarsk, Russia) . - ISSN 0272-8842
Кл.слова (ненормированные):
BaTiO3 -- Non-hydrostatic pressure -- Raman scattering -- Anharmonicity -- Noncentrosymmetric regions
Аннотация: The temperature dependencies of position, width, and integral amplitude the E(TO) line near 307 cm−1 in Raman spectra in barium titanate powders with different non-hydrostatic pressure and temperature treatment were studied. It was found that parameters of the E(TO) line near 307 cm−1 are different in the crystal, the untreated powder, the powder treated by the non-hydrostatic pressure, and the powder annealed after the pressure treatment. The line width (FWHM) increase with temperature according to Klemens model. It indicates that the origin of the line broadening is the anharmonicity of the E(TO) phonons. The pressure treatment changes the anharmonicity of the phonon potential. It was found that the temperature dependence of the integral intensity of the E(TO) line is similar to that of the second optical harmonic signal and reflects the presence of the local polar regions. Thus, the E(TO) line in the Raman spectrum allows one to characterize the average polarity of local regions and their anharmonicity depending on non-hydrostatic pressures and thermal treatment.

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Держатели документа:
Institute of Automation and Electrometry SB RAS, Novosibirsk, 630090, Russian Federation
Kirensky Institute of Physics Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Pugachev, A. M.; Zaytseva, I. V.; Surovtsev, N. V.; Krylov, A. S.; Крылов, Александр Сергеевич
}
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Anisotropic quasiparticle lifetimes in Fe-based superconductors / A. F. Kemper [et al.] // Phys. Rev. B. - 2011. - Vol. 83, Is. 18. - Ст. 184516, DOI 10.1103/PhysRevB.83.184516. - Cited References: 43. - We thank O. Dolgov, R. Hackl, D. Maslov, I. Mazin, B. Muschler, V. Mishra, and J. Schmalian for useful discussions. A. F. K. and T. P. D. thank the Walther MeiBner Institut for their hospitality. A. F. K., M. M. K., and P. J. H. acknowledge support from DOE Grant No. DE-FG02-05ER46236. M. M. K. acknowledges support from RFBR (Grant No. 09-02-00127), Presidium of RAS program "Quantum physics of condensed matter" N5.7, FCP Scientific and Research-and-Educational Personnel of Innovative Russia for 2009-2013 (GK P891), and President of Russia (Grant No. MK-1683.2010.2). A. F. K. and T. P. D. acknowledge support from DOE Grant No. DE-AC02-76SF00515. H.-P. C. and J.N.F. acknowledge DOE/BES Grant No. DE-FG02-02ER45995. . - ISSN 1098-0121

РУБ Physics, Condensed Matter
Рубрики:
ELECTRONIC RAMAN-SCATTERING
Аннотация: We study the dynamical quasiparticle scattering by spin and charge fluctuations in Fe-based pnictides within a five-orbital model with on-site interactions. The leading contribution to the scattering rate is calculated from the second-order diagrams with the polarization operator calculated in the random-phase approximation. We find one-particle scattering rates which are highly anisotropic on each Fermi surface sheet due to the momentum dependence of the spin susceptibility and the multiorbital composition of each Fermi pocket. This fact, combined with the anisotropy of the effective mass, produces disparity between electrons and holes in conductivity, the Hall coefficient, and the Raman initial slope, in qualitative agreement with experimental data.

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Держатели документа:
[Kemper, A. F.
Devereaux, T. P.
Hirschfeld, P. J.] Stanford Inst Mat & Energy Sci, SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA
[Kemper, A. F.
Devereaux, T. P.
Hirschfeld, P. J.] Stanford Univ, Geballe Lab Adv Mat, Stanford, CA 94305 USA
[Kemper, A. F.
Korshunov, M. M.
Fry, J. N.
Cheng, H-P.
Hirschfeld, P. J.] Univ Florida, Dept Phys, Gainesville, FL 32611 USA
[Korshunov, M. M.] Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
ИФ СО РАН
Stanford Institute for Materials and Energy Science, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, United States
Geballe Laboratory for Advanced Materials, Stanford University, Stanford, CA 94305, United States
Department of Physics, University of Florida, Gainesville, FL 32611, United States
L.V. Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, 660036 Krasnoyarsk, Russian Federation

Доп.точки доступа:
Kemper, A. F.; Korshunov, M. M.; Коршунов, Максим Михайлович; Devereaux, T. P.; Fry, J. N.; Cheng, H. P.; Hirschfeld, P. J.
}
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10.

Anomalous Raman phenomenon of CuCrS2 / G. M. Abramova, G. A. Petrakovskii, A. N. Vtyurin [et al.] // J. of Ra man Spectroscopy. - 2010. - Vol. 41, Is. 12. - P1485-1488

Доп.точки доступа:
Abramova, G. M.; Абрамова, Галина Михайловна; Petrakovskii, G. A.; Петраковский, Герман Антонович; Vtyurin, A. N.; Втюрин, Александр Николаевич; Rasch, J.; Krylov, A. S.; Крылов, Александр Сергеевич; Gerasimova, Yu. V.; Герасимова, Юлия Валентиновна; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Boehm, M.; Sokolov, V.
}
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11.

Application of Raman spectroscopy for identification of anhydrous CaCl2, KCaCl3 and K3NaFeCl6 in natural inclusions / S. Grishina [et al.] // Zeitschrift für Kristallographie : Supplemente : 26 Jahrestagung Deutschen Gesellschaft für Kristallographie : abstracts. - 2018. - Vol. 38. - P. 121 . - ISBN 978-3-11-059599-4

Материалы конференции,
Материалы конференции,
Материалы конференции

Доп.точки доступа:
Grishina, S.; Kodera, P.; Uriarte, L. M.; Oreshonkov, A. S.; Орешонков, Александр Сергеевич; Maximovich, Y.; Roginskii, E. M.; Imko, F.; Annual Meeting of the German Crystallographic Society(26 ; 2018 ; March ; 5-8 ; Essen, Germany); Deutschen Gesellschaft für Kristallographie, Jahrestagung(26 ; 2018 ; März ; 5-8 ; Essen, Deutschland)
}
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12.

Application of Raman spectroscopy for identification of rinneite (K3NaFeCl6) in inclusions in minerals / S. Grishina, P. Kodera, S. Goryainov [et al.] // J. Raman Spectrosc. - 2020. - Vol. 51, Is. 12. - P. 2505-2516, DOI 10.1002/jrs.6005. - Cited References: 55. - Russian Foundation for Basic Research, Grant/Award Numbers: 18-05-00682, 18-05-00682; European Regional Development Fund, Grant/Award Number: ITMS 26240220086; Vedecka Grantova Agentura MSVVaS SR a SAV, Grant/Award Number: 1/0313/20 . - ISSN 0377-0486. - ISSN 1097-4555

РУБ Spectroscopy
Рубрики:
SALT MELT
   IRON
   DEPOSIT
   FLUIDS
   TRANSFORMATIONS
   FERRIHYDRITE
Кл.слова (ненормированные):
daughter mineral -- Fe-oxyhydroxides -- fluid inclusion -- rinneite -- weathering
Аннотация: Solid daughter phases in fluid and salt melt inclusions in minerals provide important clues to characterization of mineral‐forming processes. The analysis of the fluid inclusions often requires the exposure of the daughter minerals. Rinneite (K3NaFeCl6), which is a hygroscopic mineral, decomposes in air and cannot thus be identified by conventional methods. A combined approach has been applied for investigation of synthetic and natural rinneite to acquire its diagnostic Raman spectrum for a nondestructive identification. We used natural rinneite inclusions in halite, suitable for applying a complex of methods, to clear up the reference spectrum. Improved high‐resolution X‐ray diffraction (XRD) data obtained from natural rinneite inclusion are comparable with that of previously published, with similar unit cell dimensions. Polarized Raman spectra of natural inclusions were obtained using different geometries and polarization of the incident and scattered light. Interpretation of experimental Raman spectra was performed within the framework of lattice dynamics simulations and group analysis. Individual spectral bands are interpreted in terms of Raman‐active vibrational modes of K3NaFeCl6 structural units. Raman spectrum of synthetic rinneite with main peaks at 75, 91, 103, 143, 167, 171, 187, and 239 cm−1 agrees well with the spectra of rinneite inclusions in halite from the Nepa potash deposit and rinneite daughter minerals in salt melt inclusions hosted by quartz veinlets from the porphyry gold systems in the Central Slovakia Volcanic Field. This provides a firm basis for any future identification of this mineral worldwide, using nondestructive Raman spectroscopy.

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Держатели документа:
Russian Acad Sci, Sobolev Inst Geol & Mineral, Dept Mineral, Siberian Branch, Novosibirsk, Russia.
Comenius Univ, Dept Econ Geol, Fac Nat Sci, Bratislava, Slovakia.
Kirensky Inst Phys, Mol Spect Lab, Krasnoyarsk, Russia.
Siberian Fed Univ, Inst Engn Phys & Radio Elect, Krasnoyarsk, Russia.
Novosibirsk State Univ, Dept Geol, Novosibirsk, Russia.
Slovak Acad Sci, Inst Inorgan Chem, Bratislava, Slovakia.
Russian Acad Sci, Inst Geol Ore Deposits Petrog Mineral & Geochem, Moscow, Russia.

Доп.точки доступа:
Grishina, Svetlana; Kodera, Peter; Goryainov, Sergey; Oreshonkov, A. S.; Орешонков, Александр Сергеевич; Seryotkin, Yurii; Simko, Frantisek; Polozov, Alexander G.; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [18-05-00682]; European Regional Development FundEuropean Union (EU) [ITMS 26240220086]; Vedecka Grantova Agentura MSVVaS SR a SAV [1/0313/20]
}
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13.

Arkhipkin, V. G.
All-optical transistor using a photonic-crystal cavity with an active Raman gain medium / V. G. Arkhipkin, S. A. Myslivets // Physical Review A - Atomic, Molecular, and Optical Physics. - 2013. - Vol. 88, Is. 3. - Ст. 033847. - P. , DOI 10.1103/PhysRevA.88.033847 . - ISSN 1050-2947
Аннотация: We propose a design of an all-optical transistor based on a one-dimensional photonic-crystal cavity doped with a four-level N-type active Raman gain medium. The calculated results show that in a photonic-crystal cavity of this kind transmission and reflection of the probe (Raman) beam are strongly dependent on the optical switching power. Transmission and reflection of the probe beam can be greatly amplified or attenuated. Therefore the optical switching field can serve as a gate field of the transistor to effectively control propagation of the weak probe field. It is shown that the group velocity of the probe pulse can be controlled in the range from subluminal (slow light) to superluminal (fast light).

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Доп.точки доступа:
Myslivets, S. A.; Мысливец, Сергей Александрович; Архипкин, Василий Григорьевич
}
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14.

Arkhipkin, V. G.
Coherent control of light-pulse propagation in a Raman induced grating / V. G. Arkhipkin, S. A. Myslivets // J. Opt. - 2017. - Vol. 19, Is. 5. - Ст. 055501, DOI 10.1088/2040-8986/aa6498. - Cited References:26. - This work was supported by the Russian Foundation for Basic Research under Grant No. 15-02-03959 and partially by the Siberian Branch of the Russian Academy of Sciences under Complex Program II.2P (0356-2015-0410). . - ISSN 2040-8978. - ISSN 2040-8986

РУБ Optics
Рубрики:
OPTICS
MEDIA
Кл.слова (ненормированные):
light induced gratings -- pulse propagation -- Raman gain
Аннотация: We study light-pulse propagation in a dynamically controllable periodic structure (grating) resulting from Raman interaction of a weak probe pulse with a standing-wave pump and a second control laser field in. N-type four-level atomic media. The grating is induced due to periodic spatial modulation of the Raman gain in a standing pump field (Raman gain grating). We show that it is possible to control both the probe pulse amplitude and the group velocity of the pulse from subluminal to superluminal by varying the pump or control field. Such a grating is of interest for. all-optical switches and transistors.

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Держатели документа:
Kirensky Inst Phys, Fed Res Ctr, KSC SB RAS,50, Akademgorodok, Russia.
Siberian Fed Univ, Lab Nonlinear Opt & Spect, Krasnoyarsk 660079, Russia.
Siberian Fed Univ, Dept Photon & Laser Technol, Krasnoyarsk 660079, Russia.

Доп.точки доступа:
Myslivets, S. A.; Мысливец, Сергей Александрович; Архипкин, Василий Григорьевич; Russian Foundation for Basic Research [15-02-03959]; Siberian Branch of the Russian Academy of Sciences under Complex Program II.2P [0356-2015-0410]
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15.

Arkhipkin, V. G.
Coherent manipulation of the Raman-induced gratings in atomic media / V. G. Arkhipkin, S. A. Myslivets // Phys. Rev. A. - 2016. - Vol. 93, Is. 1. - Ст. 013810, DOI 10.1103/PhysRevA.93.013810. - Cited References:44. - This work was supported by the Russian Foundation for Basic Research through Grant No. 15-02-03959. . - ISSN 1050-2947. - ISSN 1094-1622

РУБ Optics + Physics, Atomic, Molecular & Chemical
Рубрики:
ELECTROMAGNETICALLY INDUCED TRANSPARENCY
   LIGHT
   REFLECTION
   OPTICS
Аннотация: We consider dynamically controllable periodic structures (gratings), resulting from Raman interaction of a weak probe field with a standing-wave pump and a second control laser field in four-level atomic media of N type. The gratings under study are induced due to periodic spatial modulation of the Raman gain in a standing pump field and fundamentally differ from the ones based on electromagnetically induced transparency. We show that spectral and transmission properties of these gratings can be controlled with the help of an additional weak field (control field) by varying its intensity or frequency. Small variations of the control field intensity can change the system from opaque to transparent and vice versa and this structure can operate as an all-optical transistor. Such a structure can also be used as a tunable nonlinear mirror with amplification.

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Держатели документа:
LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Lab Nonlinear Opt & Spect, Krasnoyarsk 660079, Russia.
Siberian Fed Univ, Dept Photon & Laser Technol, Krasnoyarsk 660079, Russia.

Доп.точки доступа:
Myslivets, S. A.; Мысливец, Сергей Александрович; Архипкин, Василий Григорьевич; Russian Foundation for Basic Research [15-02-03959]
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16.

Arkhipkin, V. G.
Diffraction of a Laguerre-Gaussian beam in Raman interaction with a spatially periodic pump field / V. G. Arkhipkin, D. A. Ikonnikov, S. A. Myslivets // Phys. Rev. A. - 2023. - Vol. 107, Is. 2. - Ст. 023519, DOI 10.1103/PhysRevA.107.023519. - Cited References: 35. - This work was supported by the Russian Science Foundation (Grant No. 19-12-00203) . - ISSN 2469-9926. - ISSN 2469-9934
Аннотация: We studied Fresnel diffraction of a Laguerre-Gaussian beam LGp,l with arbitrary azimuthal l and radial p indices on a grating induced during its Raman interaction with a spatially periodic pump field in an atomic medium. The diffraction pattern turned out to be more complex than the classical Talbot effect observed when a plane wave illuminates a two-dimensional grating. The simulation results show that, under certain conditions, at distances corresponding to the classical Talbot planes (integer and fractional), periodic amplitude-phase distributions appear. The diffraction patterns are not a probe-field image in the induced grating plane, but a regular array of vortex annular-shaped microbeams with an inhomogeneous intensity distribution depending on the l and p indices and with a topological charge equal to that of the initial probe beam. The intensity and spatial distribution of diffraction patterns can be controlled by Raman amplification in the induced grating by varying the pump-field intensity or the Raman detuning.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, 660036 Krasnoyarsk, Russia
Department of Photonics and Laser Technology, Siberian Federal University, 660041 Krasnoyarsk, Russia

Доп.точки доступа:
Ikonnikov, D. A.; Иконников, Денис Андреевич; Myslivets, S. A.; Мысливец, Сергей Александрович; Архипкин, Василий Григорьевич
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17.

Arkhipkin, V. G.
Diffraction of vortex Gaussian beams from a two-dimensional Raman-induced grating / V. G. Arkhipkin, S. A. Myslivets // Laser Phys. - 2021. - Vol. 31, Is. 6. - Ст. 065401, DOI 10.1088/1555-6611/abf567. - Cited References: 41 . - ISSN 1054-660X. - ISSN 1555-6611

РУБ Optics + Physics, Applied

Кл.слова (ненормированные):
diffraction -- Raman gain -- Talbot effect -- optical vortex beam
Аннотация: In this paper, we study diffraction of a vortex Gaussian probe beam on a two-dimensional (2D) Raman-induced diffraction grating. Both near- and far-field diffraction of a vortex beam is considered. In the near field, quasi-Talbot images occur at specific distances from the grating, which corresponds to the classical Talbot length. Diffraction patterns in the Talbot planes are a periodic 2D array of ring-like vortex beamlets with topological charges (TCs) equal to the illuminating probe beam's charge. The lateral (off-axis) beamlets consist of several overlapping vortices with the TCs l = 1 and l =-1, and their centers (singular points) are offset relative to each other. It is shown that in the near field the TC is conserved, and the total diffraction field represents a single (global) vortex with an effective TC equal to the charge of the vortex probe beam. In the far field, diffraction patterns are also a 2D array of ring-like local vortices with a period depending on the z coordinate. Their TCs are equal to the charge of the probe field. It is shown that in a far field, the diffracted field's total TC is also equal to that of the probe field. We demonstrate that by choosing the pump field parameters, one can effectively control the intensity of diffraction orders.

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Держатели документа:
RAS, Fed Res Ctr KSC SB, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Dept Photon & Laser Technol, Krasnoyarsk 660041, Russia.

Доп.точки доступа:
Myslivets, S. A.; Мысливец, Сергей Александрович; Архипкин, Василий Григорьевич
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18.

Arkhipkin, V. G.
Induction of the maximum Raman coherence in an extended medium through fractional adiabatic passage / V. G. Arkhipkin, I. V. Timofeev // Opt. Spectrosc. - 2006. - Vol. 100, Is. 3. - P. 433-436, DOI 10.1134/S0030400X06030210. - Cited References: 24 . - ISSN 0030-400X

РУБ Optics + Spectroscopy
Рубрики:
POPULATION TRANSFER
LASER-PULSES
ATOMS
Аннотация: The effect of fractional stimulated Raman adiabatic passage in an optically dense medium of three-level Lambda atoms is shown to result in the maximum coherence on the Raman transition on a length of the medium that considerably exceeds the length of linear resonant absorption. The general case of unequal oscillator strengths of the adjacent transitions is analyzed. The results are of interest for coherent anti-Stokes Raman spectroscopy with delayed pulses.

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Доп.точки доступа:
Timofeev, I. V.; Тимофеев, Иван Владимирович; Архипкин, Василий Григорьевич
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19.

Arkhipkin, V. G.
One- and two-dimensional Raman-induced diffraction gratings in atomic media / V. G. Arkhipkin, S. A. Myslivets // Phys. Rev. A. - 2018. - Vol. 98, Is. 1. - Ст. 013838, DOI 10.1103/PhysRevA.98.013838. - Cited References: 37 . - ISSN 2469-9926. - ISSN 2469-9934

РУБ Optics + Physics, Atomic, Molecular & Chemical
Рубрики:
ELECTROMAGNETICALLY INDUCED TRANSPARENCY
COLD ATOMS
ABSORPTION
Аннотация: We propose and analyze an efficient scheme for the one- and two-dimensional atomic gratings based on periodic spatial modulation of the Raman gain and dispersion, which we name the Raman-induced diffraction gratings (RIDGs). There are fundamentally different from those based on electromagnetically induced transparency. As the probe field propagates along the direction normal to the standing pump wave, it can be effectively diffracted into high-order directions. The grating is a hybrid grating, i.e. it represents a mixture of amplitude and phase gratings. We identify the conditions when all high-order diffractions are amplified. In addition, we also show that diffraction of a probe field could be dynamically controlled using an additional laser field. With its help, it is possible to suppress or amplify diffraction beams. The RIDGs can be considered as all-optical multibeam splitters with amplification.

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

Доп.точки доступа:
Myslivets, S. A.; Мысливец, Сергей Александрович; Архипкин, Василий Григорьевич
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20.

Arkhipkin, V. G.
Preparation of maximal atomic coherence in space by fractional stimulated Raman adiabatic passage - art. no. 62590G / V. G. Arkhipkin, I. V. Timofeev, V. P. Timofeev ; ed.: K Drabovich, V Makarov, v, V Maka // ICONO 2005: Nonlinear Optical Phenomena. Ser. Proceedings of the Society of Photo-Optical Instrumentation Engineers (SPIE) : SPIE-Int. Soc. Optical Engineering, 2006. - Vol. 6259. - Ст. 62590G. - P. G2590-G2590, DOI 10.1117/12.677878. - Cited References: 7 . - ISBN 0277-786X. - ISBN 0-8194-6318-3

РУБ Optics

Аннотация: We show that in optically dense medium, consisting of three-level A-atoms, the effect of fractional stimulated Raman adiabatic passage leads to the maximum coherence on Raman transition to length of the medium considerably exceeding length of the linear resonant absorption. The general case of unequal forces of oscillators on the coupling transitions is analyzed. Results are of interest for a coherent anti-Stokes Raman spectroscopy with the delaying pulses.

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Доп.точки доступа:
Timofeev, I. V.; Тимофеев, Иван Владимирович; Timofeev, V. P.; Drabovich, K. \ed.\; Makarov, V. \ed.\; Архипкин, Василий Григорьевич; International Conference on Coherent and Nonlinear Optics(2005 ; May ; 11-15 ; St. Petersburg)
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