Труды сотрудников института физики

: 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)

/ 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)

/ 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 978-0-819РУБ Optics

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)

/ 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 978-0-819РУБ Optics

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)

/ A. V. Cherepakhin [et al.] // Opt. Mater. - 2012. - Vol. 34, Is. 5. - P. 790-792, DOI 10.1016/j.optmat.2011.11.004. - Cited References: 13. - The work was supported by Ministry of Education and Science of Russian Federation (Contract 16.740.11.0150), Grant of President of Russian Federation for support of leading scientific schools No. SS-4645.2010.2, Grant No. RNP.2.1.1.3455, Project 3.9.1 of PSB RAS, and Projects No. 27.1 and No. 5 of SB RAS. . - ISSN 0925-3467РУБ Materials Science, Multidisciplinary + Optics

Аннотация: Dispersion of refraction coefficients of orthorhombic BiB3O6 in the wavelength range between 435.8 and 1060 nm is studied, nonlinear optical coefficients are determined, and phase matching angles, angular and spectral bandwidths for second harmonic generation processes are calculated. delta-BiBO may be suitable for doubling of lasers with a wavelength in the 1.3 mu m region as well as the matrix for self-doubling lasing media. (C) 2011 Elsevier B.V. All rights reserved.

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

Доп.точки доступа:
Cherepakhin, A. V.; Черепахин, Александр Владимирович; Zaitsev, A. I.; Зайцев, Александр Иванович; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Zamkov, A. V.; Замков, Анатолий Васильевич

/ A. M. Vyunishev, A. S. Chirkin // Opt. Lett. - 2015. - Vol. 40, Is. 7. - P. 1314-1317, DOI 10.1364/OL.40.001314. - Cited References:18. - The work was partially supported by the Grant of the President of the Russian Federation MK-2908.2015.2 and by RFBR Grant No. 15-02-03838. . - ISSN 0146. - ISSN 1539-4794. - РУБ Optics

Аннотация: The method of the superposition of a nonlinearity modulation is employed to design a two-dimensional (2D) nonlinear photonic lattice for efficient multiple quasi-phase-matched second harmonic generation in the process of nonlinear Raman-Nath diffraction (NRND). An analytical solution is proposed to calculate the second harmonic intensity in rectangular 2D lattices. This approach can be useful for the generation of multiple second harmonic beams with the efficiency a few orders of magnitude higher than in the case of nonphase-matched generation via NRND.

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Держатели документа:
LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660079, Russia.
Moscow MV Lomonosov State Univ, Fac Phys, Moscow 119992, Russia.
Moscow MV Lomonosov State Univ, Ctr Int Laser, Moscow 119992, Russia.

Доп.точки доступа:
Chirkin, A. S.; Вьюнышев, Андрей Михайлович; Russian Federation [MK-2908.2015.2]; RFBR [15-02-03838]

/ L. I. Isaenko [et al.] // Opt. Mater. - 2015. - Vol. 47. - P. 413-419, DOI 10.1016/j.optmat.2015.06.014. - Cited References:23. - This work was supported by the Russian Foundation of Basic Research (Grant No. 15-02-03408a) . - ISSN 0925-3467
   Перевод заглавия: Структура и оптические свойства нелинейного кристалла Li2Ga2GeS6РУБ Materials Science, Multidisciplinary + Optics

Аннотация: Structure and optical properties of new nonlinear crystal - Li2Ga2GeS6 single crystal of optical quality, grown by the Bridgman technique were studied. The data on transmission, Raman scattering, luminescence emission, excitation and thermal quenching as well as thermostimulated luminescence are presented. Fundamental absorption edge is determined by the direct allowed electronic transitions: The values of optical band gap are estimated. Absorption band at 8.0 mu m is due to S-S vibrations. Features in photoluminescence spectra are associated with excitons: both free (narrow line at 371 nm) and self-trapped ones (broad bands at 596, 730 and 906 nm). Spontaneous emission in the 80-170 K range, both at crystal heating and cooling, is typical of pyroelectrics: This confirms the absence of symmetry center in Li2Ga2GeS6 and an opportunity of laser frequency nonlinear conversion. (C) 2015 Elsevier B.V. All rights reserved.

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Держатели документа:
SB RAS, VS Sobolev Inst Geol & Mineral, Novosibirsk 630090, Russia.
Novosibirsk State Univ, Novosibirsk 630090, Russia.
SB RAS, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia.
Far Eastern State Transport Univ, Khabarovsk 680021, Russia.

Доп.точки доступа:
Isaenko, L. I.; Исаенко Л. И.; Yelisseyev, A. P.; Елисеев, Александр Павлович; Lobanov, S. I.; Лобанов С. И.; Krinitsin, P. G.; Криницын, Павел Геннадьевич; Molokeev, M. S.; Молокеев, Максим Сергеевич; Russian Foundation of Basic Research [15-02-03408a]

. - Режим доступа: http://uzmu.phys.msu.ru/abstract/2015/4/154302 (Смотреть статью). - Электронный журнал. - Режим доступа: http://elibrary.ru/item.asp?id=25148144 (РИНЦ). - Режим доступа: http://irbiscorp.spsl.nsc.ru/fulltext/iph/2015/2015_08_UchZPhFakMGU_4_154302.pdf (Читать в сети ИФ) / А. М. Вьюнышев [и др.] // Ученые зап. физ. фак-та МГУ. - 2015. - № 4. - Ст. 154302. - Библиогр.: 5. - Работа выполнена при финансовой поддержке гранта Президента РФ МК-2908.2015.2, а также гранта РФФИ № 15-02-03838. . - ISSN 2307-9665
   Перевод заглавия: Enhancement of Raman–Nath nonlinear diffraction effect in two-dimensional nonlinear structure
Аннотация: Рассмотрена нелинейная дифракция Раман-Ната в процессе генерации второй гармоники в двумерных нелинейных фотонно-кристаллических структурах. Получено аналитическое выражение для расчета спектрально-угловых характеристик генерируемого излучения. Нелинейная структура оптимизирована методом суперпозиции модуляции нелинейности для достижения эффективной множественной генерации второй гармоники.
Raman–Nath nonlinear diffraction in the process of second harmonic generation in two-dimensional nonlinear photonic structures is considered. An analytical expression for the calculation of spectral-angular characteristics of radiation is obtained. Nonlinear structure is optimized by the method of superposition of nonlinear susceptibility modulation to obtain efficient multiple second harmonic generation.

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

Доп.точки доступа:
Вьюнышев, Андрей Михайлович; Vyunishev, A. M.; Тимофеев, Иван Владимирович; Timofeev, I. V.; Поспелов, Г. И.; Pospelov G. I.; Наседкин, Б. А.; Nasedkin B. A.; Шереметьева, Ю. А.; Sheremet’eva A. Y.; Чиркин, А. С.; Chirkin A. S.; Московский государственный университет им. М.В. Ломоносова; Волны-2015. Всероссийская школа-семинар "Физика и применение микроволн" имени А.П. Сухорукова(15 ; 2015 ; 1-6 июня ; Можайск, Моск. обл.); "Физика и применение микроволн", Всероссийская школа-семинар имени А.П. Сухорукова(15 ; 2015 ; 1-6 июня ; Можайск, Моск. обл.)

/ А. А. Лексиков [и др.] // Изв. вузов. Физика. - 2015. - Т. 58, № 8/2. - С. 325-327. - Библиогр.: 5. - Работа выполнена при поддержке Министерства образования и науки РФ, соглашение №14-607-21-0039 . - ISSN 0021-3411
   Перевод заглавия: Microstrip diplexer for radio-navigation systems GLONASS/GPS
Аннотация: Разработана и исследована новая конструкция микрополоскового диплексера для радионавигационных систем ГЛОНАСС/GPS, в которой предложен оригинальный способ согласования каналов с общим портом, существенно упрощающий настройку устройства. Каналы диплексера выполнены в виде трехзвенных полоснопропускающих фильтров на четвертьволновых микрополосковых резонаторах.
A new structure of microstrip diplexer for radio-navigation systems GLONASS/GPS is proposed and investigated. An original way for matching the diplexer’s channels with the common port is applied, which greatly simplifies designing the device. The diplexer’s channels comprise three-pole band-pass filters based on quarter-wave microstrip resonators.

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

Доп.точки доступа:
Лексиков, Александр Александрович; Leksikov, Al. A.; Лексиков, Андрей Александрович; Leksikov, An. A.; Говорун, Илья Валерьевич; Govorun, I. V.; Афонин, А. О.; Угрюмов, Андрей Витальевич; Гребенников, А. В.

/ V. V. Slabko [et al.] // Opt. Lett. - 2016. - Vol. 41, Is. 17. - P. 3976-3979, DOI 10.1364/OL.41.003976 . - ISSN 0146-9592
Аннотация: Three-wave mixing of ordinary and backward electromagnetic waves in a pulsed regime is investigated in the metamaterials that enable the coexistence and phase-matching of such waves. It is shown that the opposite direction of phase velocity and energy flux in backward waves gives rise to extraordinary transient processes due to greatly enhanced optical parametric amplification and frequency up- and down-shifting nonlinear reflectivity. The differences are illustrated through comparison with the counterparts in ordinary, co-propagating settings. © 2016 Optical Society of America.

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Держатели документа:
Siberian Federal University, 79 Svobodny Av., Krasnoyarsk, Russian Federation
Birck Nanotechnology Center, Purdue University, 1205 W State St., West Lafayette, IN, United States
L. V. Kirensky Institute of Physics, Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Slabko, V. V.; Слабко, Виталий Васильевич; Popov, A. K.; Tkachenko, V. A.; Myslivets, S. A.; Мысливец, Сергей Александрович

/ A. M. Vyunishev, V. G. Arkhipkin, A. S. Chirkin // J. Opt. Soc. Am. B. - 2016. - Vol. 33, Is. 11. - P. 2308-2312, DOI 10.1364/JOSAB.33.002308. - Cited References: 22. - Council of the President of the Russian Federation (MK-2908.2015.2); Russian Foundation for Basic Research (RFBR) (15-02-03838); Krasnoyarsk Regional Fund for Science and Technical Activity Support. - The authors thank I. V. Timofeev for the fruitful discussions and theoretical support. . - ISSN 0740-3224
Аннотация: Noncollinear second-harmonic generation from two ultrashort pulses intersecting in a nonlinear medium is studied in spectral and time domains. We derive analytical expressions for the second-harmonic (SH) amplitude in crystals of finite thickness neglecting diffraction. The contribution from characteristics of the fundamental radiation and interaction geometry to the process is analyzed. In addition, refined phase-matching conditions are obtained. We find that the spectral bandwidth is determined by the intersection angle and can be enlarged. The SH pulse duration can be optimized by varying the fundamental beam size and the intersection angle. It is found that the SH beam excited by a Gaussian fundamental beam becomes elliptical. It is shown that the fundamental pulse duration can be readily characterized with single pulses by means of measuring the ellipticity of the SH beam profile. The approach developed can potentially be used to calculate parametric interactions of fundamental pulses with an arbitrary spectrum. © 2016 Optical Society of America.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation
Department of Photonics and Laser Technology, Siberian Federal University, Krasnoyarsk, Russian Federation
Laboratory for Nonlinear Optics and Spectroscopy, Siberian Federal University, Krasnoyarsk, Russian Federation
Faculty of Physics and International Laser Center, M.V. Lomonosov Moscow State University, Moscow, Russian Federation

Доп.точки доступа:
Arkhipkin, V. G.; Архипкин, Василий Григорьевич; Chirkin, A. S.; Вьюнышев, Андрей Михайлович

/ 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
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

/ A. K. Popov, I. S. Nefedov, S. A. Myslivets // Int. Conf. on Nano-photonics and Nano-electronics (ICNN2017). - 2017. - Ст. P01

Материалы конференции


Доп.точки доступа:
Nefedov, I. S.; Myslivets, S. A.; Мысливец, Сергей Александрович; International Conference on Nano-photonics and Nano-electronics(2017 ; April 18-21 ; Yokohama, Japan)

/ A. P. Yelisseyev [et al.] // J. Phys. Chem. C. - 2018. - Vol. 122, Is. 30. - P. 17413-17422, DOI 10.1021/acs.jpcc.8b02799. - Cited References: 49. - This work was supported by state assignment project #0330-2016-0008 and partly by the Russian Foundation of Basic Research (grants nos. 15-02-03408a, 17-45-540775r_a, and 17-52-53031), National Scientific Foundations of China (grants 11474292, 51702330, 11611530680, 91622118, and 91622124), the special foundation of the director of Technical Institute of Physics and Chemistry (TIPC), the China "863" project (no. 2015AA034203), and the Youth Innovation Promotion Association, CAS (outstanding member for Z.L. and grant 2017035 for X.J.). . - ISSN 1932-7447
   Перевод заглавия: Структура и оптические свойства в кристалле Li2In2GeSe6РУБ Chemistry, Physical + Nanoscience & Nanotechnology + Materials Science, Multidisciplinary

Аннотация: Intense search for new nonlinear optical crystals for the mid-infrared region is in progress, and Li-containing quaternary chalcogenides are expected to improve transparency range, stability, phase-matching conditions, and other parameters in comparison with commercially available AgGaS2, AgGaSe2, and ZnGeP2. Single crystals of Li2In2GeSe6 up to 8 mm in size were obtained by the Bridgman- Stockbarger growth technique, and their high quality was confirmed by exciton luminescence. A monoclinic structure and direct band-to-band electronic transitions were established, and the thermal expansion was shown to be virtually isotropic. Defect-related absorption and luminescence were revealed, and the way to lower them was suggested. The electronic structure, density of states, and some optical properties were calculated from the first principles for Li2In2GeSe6. The calculated nonlinear coefficients and rather large birefringence indicate a strong phase-matching ability. These investigations demonstrate that Li2In2GeSe6 is a promising mid-infrared nonlinear optical crystal.

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Держатели документа:
RAS, Sobolev Inst Geol & Mineral, 3 Ac Koptyug Ave, Novosibirsk 630090, Russia.
Novosibirsk State Univ, 2 Pyrogova St, Novosibirsk 630090, Russia.
RAS, SB, KSC, Lab Crystal Phys,Kirensky Inst Phys,Fed Res Ctr, Krasnoyarsk 660036, Russia.
Far Eastern State Transport Univ, Dept Phys, Khabarovsk 680021, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Chinese Acad Sci, Tech Inst Phys & Chem, Beijing 100190, Peoples R China.
Univ Chinese Acad Sci, Beijing 100190, Peoples R China.

Доп.точки доступа:
Yelisseyev, A. P.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Jiang, Xingxing; Krinitsin, P. G.; Isaenko, L. I.; Lin, Zheshuai; Russian Foundation of Basic Research [15-02-03408a, 17-45-540775r_a, 17-52-53031]; National Scientific Foundations of China [11474292, 51702330, 11611530680, 91622118, 91622124]; special foundation of the director of Technical Institute of Physics and Chemistry (TIPC); China "863" project [2015AA034203]; Youth Innovation Promotion Association, CAS [2017035]; [0330-2016-0008]

/ P. Krinitsin [et al.] // Cryst. Growth Des. - 2019. - Vol. 19, Is. 3. - P. 1805-1814, DOI 10.1021/acs.cgd.8b01788. - Cited References: 43. - This work was supported by state assignment project #0330-2016-0008 and partially by the Russian Foundation of Basic Research (Grant Nos. 15-02-03408a, 17-45-540775r_a, and 17-52-53031), national scientific foundations of China (Grant Nos. 11474292, 51702330, 11611530680, 91622118, and 91622124), the special foundation of the director of Technical Institute of Physics and Chemistry (TIPC), the China "863" project (No. 2015AA034203) and the Youth Innovation Promotion Association, CAS (outstanding member for Z.L. and Grant 2017035 for X.J.). Some part of the experiments was performed in the multiple-access center "High-Resolution Spectroscopy of Gases and Condensed Matter" at the IA&E SBRAS (Novosibirsk, Russia). The authors are grateful to N. F. Beisel from the Analytical laboratory of the Nikolaev Institute of Inorganic Chemistry SB RAS for atomic-emission spectral analysis of the studied crystals. . - ISSN 1528-7483. - ISSN 1528-7505
   Перевод заглавия: Синтез, структура и оптические свойства нелинейнооптического кристалла LiGa0.55In0.45Te2РУБ Chemistry, Multidisciplinary + Crystallography + Materials Science, Multidisciplinary

Аннотация: In search of new nonlinear optical crystals for the mid-IR range, we grew single crystals of LiGa0.55In0.45Te2 (LGITe) of optical quality; its structure was established, and the spectroscopic properties were studied. LGITe crystallizes in a tetragonal chalcopyrite-like (I4̅2d) structure at 667 ± 5 °C. Crystals are transparent in the 0.76–14.8 μm spectral region with some absorption bands related to OH/H2O and Ge–O vibrations. Analysis of the Tauc plots showed that LGITe is a direct band gap semiconductor with the band gap Eg = 1.837 eV at 300 K. The Raman spectrum for LGITe is very similar to that for LiGaTe2: the most intense band A1 near 120 cm–1 corresponds to the Li–Te vibration. DFT calculations were carried out for the first time to simulate the energy band structure (band gap ∼1.67 eV), density of states (DOS), birefringence (0.049 at 2 μm), and nonlinear susceptibility (d14 = d36 = −48.73 pm/V). For ternary LiInTe2 these parameters are Δn = 0.007 and d14 = d36 = −61.4 pm/V, respectively. The calculated optical properties indicate that LiGa0.55In0.45Te2 is a promising mid-IR nonlinear optical crystal with nonlinear parameters higher than those of LiGaTe2.

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Держатели документа:
Sobolev Inst Geol & Mineral SB RAS, 3 Ac Koptyug Ave, Novosibirsk 630090, Russia.
Novosibirsk State Univ, 2 Pyrogova Str, Novosibirsk 630090, Russia.
Chinese Acad Sci, Tech Inst Phys & Chem, Beijing 100190, Peoples R China.
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Lab Crystal Phys, Krasnoyarsk 660036, Russia.
Far Eastern State Transport Univ, Dept Phys, Khabarovsk 680021, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Univ Chinese Acad Sci, Beijing 100190, Peoples R China.
Inst Automat & Electrometry SB RAS, Novosibirsk 630090, Russia.

Доп.точки доступа:
Krinitsin, Pavel; Yelisseyev, Alexander; Jiang, Xingxing; Isaenko, Lyudmila; Molokeev, M. S.; Молокеев, Максим Сергеевич; Lin, Zheshuai; Pugachev, Alexey; Russian Foundation of Basic Research [15-02-03408a, 17-45-540775r_a, 17-52-53031]; national scientific foundations of China [11474292, 51702330, 11611530680, 91622118, 91622124]; special foundation of the director of Technical Institute of Physics and Chemistry (TIPC); China "863" project [2015AA034203]; Youth Innovation Promotion Association, CAS [2017035]; [0330-2016-0008]

/ A. A. Leksikov [et al.] // Prog. Electromagn. Res. Lett. - 2020. - Vol. 88. - P. 59-65, DOI 10.2528/PIERL19083005. - Cited References: 15. - The work is supported by the Ministry of science and highest education of the Russian Federation (contract #03.G25.31.0279). . - ISSN 1937-6480
Аннотация: We propose a new method to match diplexer channels with a common port in which a Π-shaped strip conductor is used as a matching circuit. The applicability of the method is illustrated by simulating and fabricating a microstrip diplexer for GPS/GLONASS applications. The central frequencies of the channels are 1.234 GHz and 1.597 GHz, and their fractional bandwidths are 6.8% and 7.3%, respectively; minimum insertion losses are 1.05 dB and 1.08 dB. The main advantage of the diplexer is its compact size: 16.8 mm × 9.0 mm × 6.4 mm in housing. Using 1D models and a quasi-TEM approach, the frequency-dependent coupling coefficients between the matching circuit and input resonators of the channels are calculated, and the influence of the matching circuit’s geometrical parameters on its coupling with diplexer channels is studied. © 2020, Electromagnetics Academy. All rights reserved.

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Держатели документа:
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Institute of Engineering Physics and Radio Electronics, Siberian Federal University, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Leksikov, A. A.; Лексиков, Александр Александрович; Serzhantov, A. M.; Сержантов, Алексей Михайлович; Govorun, I. V.; Говорун, Илья Валерьевич; Afonin, A. O.; Афонин, Алексей Олегович; Ugryumov, A. V.; Угрюмов, Андрей Витальевич; Leksikov, An. A.; Лексиков, Андрей Александрович

/ 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
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

/ M. A. Visotin, I. A. Tarasov, A. S. Fedorov [et al.] // Acta Crystallogr. B. - 2020. - Vol. 76. - P. 469-482, DOI 10.1107/S2052520620005727. - Cited References: 85. - The following funding is acknowledged: Russian Science Foundation (grant No. 16-13-00060-Pi). . - ISSN 2052-5206РУБ Chemistry, Multidisciplinary + Crystallography

Аннотация: A pure crystallogeometrical approach is proposed for predicting orientation relationships, habit planes and atomic structures of the interfaces between phases, which is applicable to systems of low-symmetry phases and epitaxial thin film growth. The suggested models are verified with the example of epitaxial growth of α-, γ- and β-FeSi2 silicide thin films on silicon substrates. The density of near-coincidence sites is shown to have a decisive role in the determination of epitaxial thin film orientation and explains the superior quality of β-FeSi2 thin grown on Si(111) over Si(001) substrates despite larger lattice misfits. Ideal conjunctions for interfaces between the silicide phases are predicted and this allows for utilization of a thin buffer α-FeSi2 layer for oriented growth of β-FeSi2 nanostructures on Si(001). The thermal expansion coefficients are obtained within quasi-harmonic approximation from the DFT calculations to study the influence of temperature on the lattice strains in the derived interfaces. Faster decrease of misfits at the α-FeSi2(001)||Si(001) interface compared to γ-FeSi2(001)||Si(001) elucidates the origins of temperature-driven change of the phase growing on silicon substrates. The proposed approach guides from bulk phase unit cells to the construction of the interface atomic structures and appears to be a powerful tool for the prediction of interfaces between arbitrary phases for subsequent theoretical investigation and epitaxial film synthesis.

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

Доп.точки доступа:
Visotin, M. A.; Высотин, Максим Александрович; Tarasov, I. A.; Тарасов, Иван Анатольевич; Fedorov, A. S.; Федоров, Александр Семенович; Varnakov, S. N.; Варнаков, Сергей Николаевич; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Russian Science FoundationRussian Science Foundation (RSF) [16-13-00060-Pi]

/ I. A. Tarasov, I. A. Bondarev, A. I. Romanenko // J. Surf. Ingestig. - 2020. - Vol. 14, Is. 4. - P. 851-861, DOI 10.1134/S1027451020040357. - Cited References: 74. - The work was supported by Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science to the research project no. 18-42-243013. The work was partially supported by the Ministry of Education and Science of the Russian Federation and by Siberian Branch of the Russian Academy of Sciences (Project II.8.70) . - ISSN 1027-4510. - ISSN 1819-7094РУБ Physics, Condensed Matter

Аннотация: In this manuscript, we attempt to clarify the capability of utilisation of α-FeSi2 nanocrystals as a buffer layer for growth of monocrystalline/high-quality β-FeSi2 direct-gap semiconductor from the point of view of the crystal lattice misfits and near coincidence site (NCS) lattices. Iron silicides-based nanostructures have a wide spectrum of possible industrial applications in different fields. Mainly, interest in these functional materials is caused by their ecological safety and Earth’s core abundance that give us the opportunity for greener future with highly effective electronic devices. β-FeSi2 phase due to its allowed direct transition with energy close to 0.87 eV can be used as active material in light emission diodes (LED). Utilisation of buffer layers between silicon substrate and give one more tool to engineer the band structure of semiconducting β‑FeSi2 phase. We attempt to clarify the capability of the utilisation of the α-FeSi2 phase as a buffer layer for the growth of β-FeSi2 direct-gap semiconductor from the point of view of the crystal lattice misfits and near coincidence site (NCS) lattices. Possible β-FeSi2/α-,γ-,s-FeSi2/Si orientation relationships (ORs) and habit planes were examined with crystallogeometrical approaches and compared with β-FeSi2/Si ones. The lowest interplanar and interatomic spacing misfits between silicon lattice and a silicide one are observed for the pair of s-FeSi2{011}[200]/Si{022}[100] at room temperature and equal to –0.57%. The least interplanar and interatomic spacing misfit of 1.7 and 1.88%, respectively, for β-FeSi2/Si, can be decreased as low as –0.67 (interplanar) and 0.87 (interatomic) % by placing an α-FeSi2 layer between silicon and β-FeSi2 phase. It is stated that the growth of metastable γ-FeSi2 is also favourable on silicon due to low interplanar and interatomic spacing misfit (–0.77%) and a higher density of NCS in comparison with s-FeSi2. Design and technological procedure for the synthesis of possible β-FeSi2/α-FeSi2/Si heterostructure have been proposed based on the results obtained.

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Держатели документа:
RAS, Kirensky Inst Phys, Fed Res Ctr, KSC,SB, Krasnoyarsk 660036, Russia.
RAS, Nikolaev Inst Inorgan Chem, SB, Novosibirsk 630090, Russia.

Доп.точки доступа:
Bondarev, I. A.; Бондарев, Илья Александрович; Romanenko, A. I.; Тарасов, Иван Анатольевич; Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science [18-42-243013]; Ministry of Education and Science of the Russian FederationMinistry of Education and Science, Russian Federation; Siberian Branch of the Russian Academy of SciencesRussian Academy of Sciences [II.8.70]

/ А. О. Афонин, А. А. Лексиков, И. В. Говорун [и др.] // Журн. СФУ. Техн. и технол. - 2020. - Т. 13, № 7. - С. 871-881 ; J. Sib. Fed. Univ. Engin. Technol., DOI 10.17516/1999-494X-0272. - Библиогр.: 11 . - ISSN 1999-494X. - ISSN 2313-6057
   Перевод заглавия: The Investigation of Coupling between Matching Circuit and Input Resonators of Channels in a Microstrip Diplexer
Аннотация: В данной статье приведены результаты исследования коэффициентов связи согласующей цепи с входными резонаторами каналов в микрополосковом диплексере. Каналы диплексера представляют собой двухзвенные фильтры, а согласующая цепь – регулярный нерезонансный отрезок микрополосковой линии, помещенной между входными резонаторами каналов. Общий порт подключен к наружному концу отрезка, а его второй конец разомкнут. Исследования проводили теоретически с помощью компьютерной программы, разработанной на основе математических выражений, полученных применением одномерных моделей и квазистатического приближения. Результаты исследования показывают, что величина связи достаточно велика и использование согласующей цепи в виде нерезонансного отрезка микрополосковой линии позволяет проектировать диплексеры с широкими полосами пропускания каналов.
This paper deals with investigation of the coupling coefficients between the matching circuit and the input resonators of channels in a microstrip diplexer. Diplexer channels are two-section filters, and matching circuit is regular non-resonant segment of a microstrip line placed between input resonators of channels. The common port is connected to outer end of the segment and its second end is opened. Research was carried out theoretically using a computer program developed on the basis of mathematical expressions obtained by means of one-dimensional models and quasi-static approximation. The results show that a value of coupling is quite large and the use of the matching circuit in a form of a non-resonant segment of a microstrip line allows to design diplexers with wide fractional bandwidth of the channels.

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Держатели документа:
Институт физики им. Л.В. Киренского СО РАН Российская Федерация, Красноярск
Сибирский федеральный университет Российская Федерация, Красноярск

Доп.точки доступа:
Афонин, Алексей Олегович; Afonin, A. O.; Лексиков, Андрей Александрович; Leksikov, An. A.; Лексиков, Александр Александрович; Leksikov, A. A.; Говорун, Илья Валерьевич; Govorun, I. V.; Сержантов, Алексей Михайлович; Serzhantov, A. M.; Угрюмов, Андрей Витальевич; Ugryumov, A. V.