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Aleksandrovsky, A. S.
Random quasi-phase-matching and nonlinear diffraction in nonlinear photonic crystal structures of strontium tetraborate : conference paper / A. S. Aleksandrovsky, A. M. Vyunishev, A. I. Zaitsev // Ultrafast optics conference. - Davos, 2013. - Ст. Fr2.3

Держатели документа:
Институт физики им. Л.В. Киренского СО РАН

Доп.точки доступа:
Vyunishev, A. M.; Вьюнышев, Андрей Михайлович; Zaitsev, A. I.; Зайцев, Александр Иванович; Александровский, Александр Сергеевич; Ultrafast optics conference (9 ; 2013 ; March; 2-8 ; Davos Congr. Center, Switzerland)
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Generation of fs-pulses down to 121 nm by frequency doubling using random quasi-phase-matching in strontium tetraborate / P. Trabs [et al.] // Ultrafast optics conference. - Davos, 2013. - Ст. Fr2.4

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Держатели документа:
Max-Born-Institute for Nonlinear Optics and Ultrafast Spectroscopy, 2A Max-Born-Str., D-12489 Berlin, Germany
L. V. Kirensky Institute of Physics, Akademgorodok, Krasnoyarsk 660036, Russia and Siberian Federal University, Krasnoyarsk 660079, Russia

Доп.точки доступа:
Trabs, P.; Noack, F.; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Vyunishev, A. M.; Вьюнышев, Андрей Михайлович; Zaitsev, A. I.; Зайцев, Александр Иванович; Radionov, N.V.; Petrov, V.; Ultrafast optics conference (9 ; 2013 ; March; 2-8 ; Davos Congr. Center, Switzerland)
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Nonlinear photonic crystals of strontium tetraborate: properties and radiation conversion to the VUV / A. S. Aleksandrovsky [et al.] // VI International symposium on modern problems of laser physics (MPLP'2013) : [Proceedings]. - 2013. - Ст. B1. - P. 197

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Доп.точки доступа:
Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Vyunishev, A. M.; Zaitsev, A. I.; Зайцев, Александр Иванович; Trabs, P.; Noack, F.; Petrov, V.; Slabko, V. V.; Слабко, Виталий Васильевич; Radionov, N. V.; Радионов, Никита Вячеславович; "Modern problems of laser physics", International symposium(6 ; 2013 ; Aug. 25-31 ; Novosibirsk)
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Phase matched conversion of radiation in nonlinear photonic crystals of strontium tetraborate / A. S. Aleksandrovsky [et al.] ; ed.: C. Fabre, V. Zadkov // Proc. of SPIE. - 2011. - Vol. 7993. - Ст. 799302. - P. , DOI 10.1117/12.872943. - Cited References: 9 . - ISSN 0277-786X. - ISSN 978-0-819

РУБ Optics
Рубрики:
OPTICAL CRYSTALS
Кл.слова (ненормированные):
nonlinear photonic crystal -- strontium tetraborate -- second harmonic generation -- random quasi phase matching
Аннотация: Random quasi-phase-matched frequency doubling of fs pulses to the deep UV was obtained in 1D nonlinear photonic crystal (NPC) of strontium tetraborate. Tuning range of generated radiation is from 187.5 to 215 nm. The spectrum of generated radiation consists from series of peaks with the width of order of 1 angstrom. These peaks are the manifestation of the NPC band structure. Using fs oscillator as the fundamental radiation source, maximum average power of generated radiation is of order 1 mu W, the enhancement factor with respect to monodomain sample being of order of several hundred. The red rotational shift of NPC band structure is experimentally demonstrated.

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Доп.точки доступа:
Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Vyunishev, A. M.; Вьюнышев, Андрей Михайлович; Zaitsev, A. I.; Зайцев, Александр Иванович; Ikonnikov, A. A.; Pospelov, G. I.; Slabko, V. V.; Слабко, Виталий Васильевич; Fabre, C. \ed.\; Zadkov, V. \ed.\; International Conference on Coherent and Nonlinear Optics(2010 ; Aug. ; 23-26 ; Kazan, Russia)
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Deep UV generation and fs pulses characterization using strontium tetraborate / A. S. Aleksandrovsky [et al.] ; ed. V. V. Slabko // Proc. of SPIE. - 2011. - Vol. 8071. - Ст. 80710K, DOI 10.1117/12.886189. - Cited References: 12 . - ISSN 0277-786X. - ISSN 978-0-819

РУБ Optics
Рубрики:
CRYSTAL
Кл.слова (ненормированные):
nonlinear photonic crystal -- strontium tetraborate -- second harmonic generation -- random quasi phase matching -- ultrafast diagnostics
Аннотация: The properties of NPC structures in strontium tetraborate are analyzed. Different types of NPC structures are revealed that possess different nonlinear properties, and their spectral dependences of frequency conversion efficiency are calculated and compared. Experimental study of these structures is reported for the process of doubling of the second harmonic of fs Ti:S laser. Tuning of generated radiation is obtained in the range 187.5 - 232.5 nm, with extreme insensitivity to the angular orientation of NPC. Behavior of tuning curve along investigated fundamental wave range is similar in all studied samples, but efficiency obtained depends on the type of structure. Conversion efficiency and spectral quality of generated radiation is experimentally shown to grow better when using NPC with improved structure. Prospects of VUV converter on a single NPC are discussed. NPCs of SBO are demonstrated to be useful for autocorrelation diagnostics both in random QPM geometry and in the geometry of nonlinear diffraction from virtual beam.

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Доп.точки доступа:
Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Vyunishev, A. M.; Вьюнышев, Андрей Михайлович; Zaitsev, A. I.; Зайцев, Александр Иванович; Ikonnikov, A. A.; Pospelov, G. I.; Slabko, V. V.; Слабко, Виталий Васильевич; Zhokhova, A. A.; Slabko, V. V. \ed.\; Nonlinear Optics and Applications (5 ; 2011 ; Apr. ; 19-21 ; Prague, Czech Republic)
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    Cerenkov nonlinear diffraction of femtosecond pulses / A. M. Vyunishev [et al.] // J. Opt. Soc. Am. B. - 2013. - Vol. 30, Is. 7. - P. 2014-2021, DOI 10.1364/JOSAB.30.002014. - Cited References: 43. - The work was partially supported by the Grant of the President of the Russian Federation MK-250.2013.2, by RFBR through Grant No. 12-02-31167, by the Ministry of Education and Science of the Russian Federation (Contract No. 14.B37.21.0730), by Krasnoyarsk Regional Fund of Science and Technical Activity Support, by PSB RAS Project 2.5.2, and by SFU Grant F12. . - ISSN 0740-3224
   Перевод заглавия: Черенковская нелинейная дифракция фемтосекундных импульсов

РУБ Optics
Рубрики:
STRONTIUM BARIUM NIOBATE
   2ND-HARMONIC GENERATION
   PHOTONIC CRYSTAL
   DOMAIN-WALLS
   MODULATION
Аннотация: Cerenkov nonlinear diffraction of femtosecond pulses in one-dimensional nonlinear photonic crystal of strontium tetraborate was studied theoretically and experimentally in both frequency and time domains. Spectral features of second harmonic radiation were measured in the course of mapping the nonlinear photonic crystal structure. The local second harmonic spectrum demonstrates complex angular behavior within the beam cross section. The spectral width of the second harmonic radiation is found to be fundamental beam size-dependent, and optimal focusing should be used for exact conversion of the fundamental spectrum into the second harmonic one. Experimental results are in excellent agreement with calculations. Maximum second harmonic generation efficiency was up to 2.1% at pumping by a femtosecond oscillator. (C) 2013 Optical Society of America

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Держатели документа:
LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Krasnoyarsk 660079, Russia

Доп.точки доступа:
Vyunishev, A. M.; Вьюнышев, Андрей Михайлович; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Zaitsev, A. I.; Зайцев, Александр Иванович; Slabko, V. V.; Слабко, Виталий Васильевич
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    Calcium and strontium thiobarbiturates with discrete and polymeric structures / N. N. Golovnev [et al.] // J. Coordinat. Chem. - 2013. - Vol. 66. No. 23. - P. 4119–4130, DOI 10.1080/00958972.2013.860450 . - ISSN 4119-4130
   Перевод заглавия: Кальциевый и стронциевый тиобарбитураты с дискретной и полимерной структурами
Кл.слова (ненормированные):
Calcium -- 2-Thiobarbituric acid IR -- Crystal structure -- Thermal decomposition -- Strontium -- IR spectroscopy
Аннотация: Three new alkaline earth metal complexes, [Ca2(H2O)8(μ2-HTBA-O,O′)2(HTBA-O)2] (1), [Ca(H2O)5(HTBA-O)2]·2H2O (2), and [Sr(H2O)4(μ2-HTBA-O,S)2]n (3) (H2TBA = 2-thiobarbituric acid, C4H4N2O2S), were synthesized and characterized by FT-IR spectroscopy, TG-DSC, and single-crystal and powder X-ray diffraction analysis. The single-crystal X-ray diffraction data revealed that 1 and 2 are discrete structures, whereas 3 is a polymer. In 1 and 2, Ca2+ is seven-coordinate and forms a monocapped trigonal prism. In 1, the prisms are pairwise connected with the assistance of two [μ2-HTBA-O,O′]− ligands. In 3, Sr2+ is coordinated by four monodentate HTBA− via S or O donors and four waters, with the formation of a distorted square antiprism. The antiprisms are connected by μ2-O,S bridging HTBA−. Hydrogen bonding involving coordinated water and π–π interactions plays an important role in construction of the supramolecular 3-D structures in 1–3. Infrared spectroscopic data supported the structural data. The thermal stability of 1–3 decreases in the order 1 > 2 > 3. Dehydration of 1–3 was a multi-step process, followed by exothermic oxidative degradation of the 2-thiobarbiturate moiety between 290 and 800 °C.

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Держатели документа:
Siberian Fed Univ, Dept Chem, Krasnoyarsk, Russia
LV Kirenskii Inst Phys, Lab Crystal Phys, Krasnoyarsk 660036, Russia
Inst Chem & Chem Technol, Lab Catalyt Convers Small Mol, Krasnoyarsk, Russia
Russian Acad Sci, Inst Semicond Phys, Lab Opt Mat & Struct, Novosibirsk 630090, Russia;

Доп.точки доступа:
Golovnev, N. N.; Головнёв, Николай Николаевич; Molokeev, M. S.; Молокеев, Максим Сергеевич; Vereshchagin, S. N.; Atuchin, V. V.
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    Optical birefringence of β-SrB4O7 crystals with strontium substitutions / A. I. Zaitsev [et al.] // 17th Int. Conf. on Crystal Growth and Epitaxy (ICCGE-17) : Book of Abstracts. - 2013. - P. 464-465
   Перевод заглавия: Оптическое двупреломление в кристаллах β-SrB4O7 с замещением стронция

Материалы конференции

Доп.точки доступа:
Zaitsev, A. I.; Зайцев, Александр Иванович; Molokeev, M. S.; Молокеев, Максим Сергеевич; Cherepakhin, A. V.; Черепахин, Александр Владимирович; Radionov, N. V.; Радионов, Никита Вячеславович; Zamkov, A. V.; Замков, Анатолий Васильевич; International Conference on Crystal Growth and Epitaxy (17 ; 2013 ; Aug. ; 11-16 ; Warsaw, Poland)
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Aleksandrovsky, A. S.
Nonlinear photonic crystals of strontium tetraborate / A. S. Aleksandrovsky, A. M. Vyunishev, A. I. Zaitsev // Photonic Crystals: Fabrication, Band Struct. and Appl. - New York : Nova Science Publishers, 2011. - P. 245-275 . - ISBN 978-161668953-7
Аннотация: Structural, optical and nonlinear optical properties of strontium tetraborate (SBO) single crystals are summarized. SBO presently is not considered to be a ferroelectric, however, domain structures consisting of alternating oppositely poled domains, strongly resembling those present in such ferroelectrics as potassium titanyl phosphate and lithium niobate, were recently discovered in this crystal. Such geometrical properties as orientation, size, and degree of randomization, of these domain structures are described. The problem of origin of domain structures in SBO is considered, as well as the possibility of their characteristics control. From the point of view of optical properties, domain-structured samples of strontium tetraborate are classified as randomized nonlinear photonic crystals. Comparative study of nonlinear diffraction and random quasi-phase-matching of nanosecond and femtosecond laser pulses in these nonlinear photonic crystals is presented. Prospects of creation of nonlinear optical converters of laser radiation into VUV spectral region based on domain structured strontium tetraborate are discussed.

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Держатели документа:
L.V. Kirensky Institute of Physics SB RAS, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Vyunishev, A. M.; Вьюнышев, Андрей Михайлович; Zaitsev, A. I.; Зайцев, Александр Иванович; Александровский, Александр Сергеевич
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10.

Heat capacity and thermodynamic properties of crystalline SrB4O7 / N. V. Moiseev [et al.] // Inorg. Mater. - 2012. - Vol. 48, Is. 5. - P. 504-507, DOI 10.1134/S0020168512050123. - Cited References: 24. - This work was supported in part by the RF President's Grants Council (grant no. NSh-4645.2010.2), the RF Ministry of Education and Science (analytical departmental targeted program Development of the Scientific Potential of Higher Education Institutions, grant no. RNP 2.1.1/10747), Bryansk State University (project no. 1.1.11), and the Physical Sciences Division of the Russian Academy of Sciences (Physics of Advanced Materials and Structures Program, project no. 2.5.2). . - ISSN 0020-1685

РУБ Materials Science, Multidisciplinary
Рубрики:
STRONTIUM TETRABORATE
SINGLE-CRYSTALS
LUMINESCENCE
Аннотация: The heat capacity of a strontium tetraborate (SrB4O7) single crystal has been determined in the temperature range 55-300 K by adiabatic calorimetry, and its Debye characteristic temperature, entropy change, enthalpy increment, and phonon mean free path have been calculated as functions of temperature.

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Публикация на русском языке Теплоемкость и термодинамические свойства кристаллического SrB4O7 [Текст] / Н. В. Моисеев [и др.] // Неорган. матер. - 2012. - Т. 48 № 5. - С. 588-591

Держатели документа:
[Moiseev, N. V.
Popov, P. A.
Solomennik, V. D.] Petrovskii State Univ, Bryansk 241036, Russia
[Zaitsev, A. I.
Cherepakhin, A. V.] Russian Acad Sci, Siberian Branch, Kirensky Inst Phys, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Moiseev, N. V.; Popov, P. A.; Solomennik, V. D.; Zaitsev, A. I.; Зайцев, Александр Иванович; Cherepakhin, A. V.; Черепахин, Александр Владимирович
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