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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Aleksandrovsky A. S., Shakhura I. E., Vyunishev A. M., Zaitsev A. I., Zamkov A. V.
Заглавие : Nonlinear diffraction and random QPM in strontium tetraborate
Место публикации : 4th International Conference on Advanced Optoelectronics and Lasers (CAOL 2008), Sept. 29 2008-Oct. 4, 2008,Alushta, Crimea, Ukraine, p.398
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Вид документа : Статья из сборника (выпуск продолж. издания)
Шифр издания :
Автор(ы) : Slyusarenko N. V., Krylov A. S., Timofeeva M. V., Shipilovskikh S. A., Slyusareva E. A.
Заглавие : Luminescent studies of flexible [DUT-8 (Zn)] metal-organic frameworks
Колич.характеристики :6 с
Коллективы : International Conference on Pulsed Lasers and Laser Applications
Место публикации : Proc. SPIE. - 2023. - Vol. 12920: XVI International Conference on Pulsed Lasers and Laser Applications (10-15 September 2023, Tomsk, Russian Federation). - Ст.1292014. - , DOI 10.1117/12.3005774
Примечания : Cited References: 10. - The reported study was funded by RFBR and DFG, project 21-52-12018
Аннотация: An approach to the study of the porous structure of metal-organic frameworks (MOF) using guest luminescent molecules with specially selected spectral characteristics as acceptors of electronic excitation energy was suggested. If such molecules are adsorbed in MOF pores with sizes comparable to the Förster radius, Förster resonance energy transfer (FRET) from photoexcited linkers occurs. In this case quenching of luminescence of the linker can serve as analytical signals indicating open pore structure of the MOF. The developed approach was demonstrated by the example of DUT-8(Zn) MOF and Coumarin 1 as guest molecules by time-resolved luminescence methods.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kostyukov A. S., Gerasimov V. S., Ershov A. E., Bulgakov E. N., Sadreev A. F.
Заглавие : Size-selective optical trapping of nanoparticles with bound states in the continuum
Колич.характеристики :6 с
Место публикации : Opt. Lasers Eng. - 2023. - Vol. 171. - Ст.107797. - ISSN 01438166 (ISSN), DOI 10.1016/j.optlaseng.2023.107797. - ISSN 18730302 (eISSN)
Примечания : Cited References: 46. - The work was supported by Russian Science Foundation Grant No. 22-12-00070
Аннотация: We consider a waveguide with a symmetrically integrated silicon cylinder. This design supports a symmetry protected bound state in the continuum (BIC) with Q-factor controlled by slight displacement of the cylinder. When excited by a TE10 electromagnetic wave, the BIC leads to giant optical forces near the cylinder. These forces have a strong impact on nanoparticles being dragged by liquid flow over the waveguide as they approach the cylinder. At the same time, the nanoparticles perturb the resonant frequency of the BIC with a value proportional to their volume and proximity to the cylinder. Therefore, the interplay between the resonant width of the BIC and the nanoparticle frequency perturbation determines the positions of the nanoparticles trapped around the cylinder. This paradigm demonstrates resonant self-trapping and sorting of nanoparticles by size through BIC excitation. We highlight the extreme sensitivity of these effects to the frequency of the injected TE wave. Additionally, we show that these results remain valid when considering the finite conductivity of metal waveguides.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Savchenko V., Gel'mukhanov F., Laarmann T., Polyutov S. P., Kimberg V.
Заглавие : Dynamical phase shift in x-ray absorption and ionization spectra by two delayed x-ray laser fields
Место публикации : Phys. Rev. A. - 2021. - Vol. 104, Is. 1. - Ст.013114. - ISSN 24699926 (ISSN), DOI 10.1103/PhysRevA.104.013114
Примечания : Cited References: 22. - The reported study was funded by Russian Foundation for Basic Research (RFBR), Project No. 19-29-12015. F.G. acknowledges also the support from the Helmholtz Virtual Institute VI419 Dynamic Pathways in Multidimensional Landscapes. T.L. acknowledges support by the Deutsche Forschungsgemeinschaft through the Cluster of Excellence “Advanced Imaging of Matter” (EXC 2056 - Project No. 390715994). V.K. acknowledges support from the Vetenskapsrådet (Grant No. 2019-03470)
Аннотация: We study theoretically x-ray absorption and ionization spectra of an atom or molecule by two coherent x-ray pulses that show a relative phase shift resulting in a time delay of the pulse envelopes. We demonstrate that the phase modulation of the spectra is shifted with respect to the phase oscillation comb of the x-ray double pulse. The reason for this shift is the dynamics of the process defined by the interplay of the delay time, the pulse width, the detuning, and the lifetime of the core-excited state.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gel'mukhanov F., Odelius M., Polyutov S. P., Fohlisch A., Kimberg V.
Заглавие : Dynamics of resonant x-ray and Auger scattering
Место публикации : Rev. Mod. Phys. - 2021. - Vol. 93, Is. 3. - Ст.035001. - ISSN 00346861 (ISSN), DOI 10.1103/RevModPhys.93.035001
Примечания : Cited References: 467. - The reported study was funded by the Russian Foundation for Basic Research (RFBR) (Project No. 19-29-12015) and partly supported by the Ministry of Science and Higher Education of the Russian Federation (Project No. FSRZ-2020-0008). M. O. acknowledges funding from the European Union’s Horizon 2020 research and innovation program under Marie Skłodowska-Curie Grant Agreement No. 860553, the Carl Tryggers Foundation (Contract No. CTS18:285), and the Swedish Energy Agency (Contract No. 2017-006797). Funding is acknowledged from the European Research Council through ERC-ADG-2014 (Advanced Investigator Grant No. 669531 EDAX) at the University of Potsdam within the Horizon 2020 EU Framework Programme for Research and Innovation. Support from the Helmholtz Association, in particular, the Helmholtz Virtual Institute 419 “Dynamic Pathways in Multidimensional Landscapes” and the Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, is acknowledged. Support from the Swedish Research Council (Grants No. 2019-03470 and No. 2015-03781) is also acknowledged
Аннотация: An overview of both experimental and theoretical results in the field of resonant scattering of tunable soft and hard x-ray radiation is presented, with a main focus on the closely related processes of resonant inelastic x-ray scattering (RIXS) and resonant Auger scattering (RAS). The review starts with an overview of fundamental dynamical aspects of RIXS illustrated for different systems. A detailed analysis of case studies with increasing complexity, considering both gas-phase and condensed matter (liquids and solids) applications, is given. In the review, the most important achievements in investigations of coupled electron-nuclear dynamics and structural aspects in studies of liquids and solids over the last two decades are outlined. To give a perspective on the insights from RIXS and RAS, the x-ray results are discussed against the background of complementary experimental techniques like vibrational infrared absorption and Raman spectroscopy, as well as small-angle x-ray and neutron scattering. Finally, recent achievements in time-resolved studies based on x-ray free-electron lasers are described.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Yang J. -H., Huang Z. -T., Maksimov D. N., Pankin P. S., Timofeev I. V., Hong K. -B., Li H., Chen J. -W., Hsu C. -Y., Liu Y. -Y., Lu T. -C., Lin T. -R., Yang C. -S., Chen K. -P.
Заглавие : Low-threshold bound state in the continuum lasers in hybrid lattice resonance metasurfaces
Место публикации : Laser Photon. Rev. - 2021. - Vol. 15. Is. 10. - Ст.2100118. - ISSN 18638880 (ISSN), DOI 10.1002/lpor.202100118
Примечания : Cited References: 66. - This study was supported by the Higher Education Sprout Project of the National Chiao Tung University and Ministry of Education, also supported by the Higher Education Sprout Project of the National Yang Ming Chiao Tung University and Ministry of Education (MOE) as well as the Ministry of Science and Technology of Taiwan (MOST‐107‐2221‐E‐009‐046‐MY3, 107‐2218‐E‐009‐056, 108‐2221‐E‐019‐055‐MY3, 108‐2221‐E‐019‐057‐MY3, 108‐2923‐E‐009‐003‐MY3, 109‐2124‐M‐009‐005, 109‐2221‐E‐009‐150, and 110‐2218‐E‐A49‐012‐MBK). This research was also funded by the Russian Foundation for Basic Research (project no. 19‐52‐52006). The authors also thank Taiwan Semiconductor Research Institute (TSRI) and the Center for Micro/Nano Science and Technology (CMNST) for the supporting of sample fabrication
Аннотация: Bound states in the continuum (BICs) have attracted considerable research attention due to their infinite quality factor (Q-factor) and extremely localized fields, which drastically enhances light–matter interactions and yields high potential in topological photonics and quantum optics. In this study, the room temperature directional lasing normal to a BIC metasurface is demonstrated with hybrid surface lattice resonances. Compared to the plasmonic nanolasers, the BIC metasurface lasers possess directional radiation and a larger emission volume. The high Q-factor resonance of BIC metasurface overcomes the limitation of a large mode volume in achieving low-threshold lasing. In addition, a design rule is proposed to prevent the occurrence of wavelength shift when the Q-factor changes; thus, the lasing thresholds for different BIC metasurfaces can be compared. In this work, the high localization ability of BICs is used to achieve the low lasing threshold (1.25 nJ) at the room temperature. The “light in–light out” diagram of the aforementioned laser based on simulations and experiments exhibits a large spontaneous emission coupling factor (β = 0.9) and the S-curve. The device developed in this study can be used in various applications, such as quantum emitters, optical sensing, nonlinear optics, and topological states engineering.
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Вид документа : Статья из сборника (выпуск продолж. издания)
Шифр издания :
Автор(ы) : Rogova A. V., Gerasimova M. A., Tomilin F. N., Slyusareva E. A.
Заглавие : Quantum chemical study of the spectral characteristics of fluorescein dyes bound to chitosan
Коллективы : International Conference on Pulsed Lasers and Laser Applications
Место публикации : Proc. SPIE: SPIE, 2021. - Vol. 12086: 15th International Conference on Pulsed Lasers and Laser Applications (12 - 17 September 2021, Tomsk, Russia) Conference code: 176103. - Ст.120861V. - , DOI 10.1117/12.2613980
Примечания : Cited References: 17. - This study was supported by the Russian Foundation for Basic Research, project no. 19-02-00450-а and by the Ministry of Science and High Education of Russian Federation, project no. FSRZ-2020-0008
Аннотация: Recently, there has been an increased interest in natural polysaccharides, in particular, chitosan, which are widely used in medicine and industry. Chitosan labeled with fluorescein dyes acquires additional optical properties that can be used in sensing and delivery systems. Mechanism of binding of a polymer to a label largely determines the field of its possible applications. The quantum chemical calculation using the B3LYP/aug-cc-pVDZ theory level has been made in order to contribute to the understanding of intermolecular interactions. The geometry of fluorescein, eosin Y, and erythrosin B in the dianionic, monoanionic, and neutral quinoid forms interacting with chitosan has been optimized and the absorption spectra have been calculated using the time-dependent density functional theory taking into account the solvent. The comparison of the calculated absorption spectra with the experimental data has shown a major role of the electrostatic mechanism in binding of anionic dyes to the protonated chitosan groups.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Sidorenko M. S., Sergaeva O. N., Sadrieva Z. F., Roques-Carmes C., Muraev P. S., Maksimov D. N., Bogdanov A. A.
Заглавие : Accidental bound state in the continuum in a chain of dielectric disks
Коллективы : Conference on Lasers and Electro-Optics Europe; European Quantum Electronics Conference , RFBRRussian Foundation for Basic Research (RFBR) [19-02-00419]; Russian FederationRussian Federation [MK2224.2020.2]; Foundation for the Advancement of Theoretical Physics and Mathematics BASIS
Место публикации : 2021 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference: IEEE, 2021. - Conference on Lasers and Electro-Optics Europe / European Quantum Electronics Conference (Jun 21-25, 2021, Electr. Network). - ISBN 978-1-6654-1876-8, DOI 10.1109/CLEO/Europe-EQEC52157.2021.9592618
Примечания : Cited References: 2. - The work was supported by RFBR (19-02-00419), the grant of the President of the Russian Federation (MK2224.2020.2) and the Foundation for the Advancement of Theoretical Physics and Mathematics BASIS
Аннотация: Dielectric resonators are open systems whose eigenmodes couple to the radiation continuum resulting in nonzero radiation losses. For a long time, it was believed that only guided modes with frequencies below the light line were decoupled from the radiation continuum [1] . In the early 2000’s, several counterexamples of perfectly localized states – i.e. totally decoupled from the radiation continuum – at frequencies above the light line were proposed in dielectric gratings and photonic crystal waveguides [2] . Such states are known as bound states in the continuum (BIC).
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Вид документа : Статья из сборника (выпуск продолж. издания)
Шифр издания :
Автор(ы) : Tomilin F. N., Rogova A. V., Kaufman E. V., Drevolsky A. S., Gerasimova M. A., Slyusareva E. A.
Заглавие : Solvent effect in the theoretical absorption and emission spectra of fluorescein dyes
Коллективы : International Conference on Pulsed Lasers and Laser Applications
Место публикации : International Conference on Pulsed Lasers and Laser Applications (14 ; 2019 ; 15-20 Sept. ; Tomsk). Proceedings of SPIE - The International Society for Optical Engineering. - 2019. - Vol. 11322: XIV International Conference on Pulsed Lasers and Laser Applications, AMPL 2019 (15-20 September 2019) Conference code: 156656. - Ст.113220O. - , DOI 10.1117/12.2548739
Примечания : Cited References: 13. - This work was supported by the Russian Foundation for Basic Research, project 19-02-00450
Аннотация: Fluorescein and its halogenated derivatives representing a family of homologous dyes with the gradual substitution of halogen atoms for hydrogen ones are widely used in biomedicine as fluorescent probes. This stimulates the intense experimental and theoretical studies of their fluorescent properties in aqueous solutions. However, the theoretical calculations are complicated by the necessity of taking into account the effect of a solvent (water) in the explicit form and the need for effective basic sets. This is especially important for the dyes that contain heavy atoms. In this study, the quantum-chemical investigations of the dianionic form of fluorescein and its Br- and I-substituted derivatives (eosin Y and erythrosin B) have been carried out using the time-dependent density functional theory (B3LYP functional) implemented in the GAMESS software suite. The effect of a solvent has been considered in the framework of the modified Thomas polarizable continuum model. The calculations have been made for vertical (absorption and emission) excitations in the adiabatic approximation and at the nonequilibrium solvation. The results obtained for the nonequilibrium solvation are in excellent agreement with the experimental data for fluorescein and its halogenated derivatives.
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10.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Kurilova A. V., Sokolov A. Е., Sherepa A. V., Volochaev M. N., Velikanov D. A., Goncharova D. A., Shabalina A. V., Svetlichnyi V.
Заглавие : Magnetic and optical properties of nanoparticles of iron and nickel decorated with gold and the possibility of their medical use
Коллективы : Pulsed Lasers and Laser Applications, International Conference
Место публикации : Pulsed Lasers and Laser Applications, International Conference (14 ; 2019 ; 15-20 Sept. ; Tomsk). Pulsed lasers and laser applications (AMPL-2019): abstracts of XIV Int. conf. - 2019. - Ст.Y-30. - P.30. - ISBN 978-5-93629-634-5
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11.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Sokolov A. Е., Kurilova A. V., Sherepa A. V., Volochaev M. N., Velikanov D. A., Goncharova D. A., Shabalina A. V., Svetlichnyi V.
Заглавие : Magneto-optical properties of the iron oxide nanoparticles obtained by laser ablation
Коллективы : Pulsed Lasers and Laser Applications, International Conference
Место публикации : Pulsed lasers and laser applications (AMPL-2019): abstracts of XIV Int. conf. - 2019. - Ст.B-12. - P.61-62. - ISBN 978-5-93629-634-5
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12.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Drozdova A. K., Cherepanov V. N., Svetlichny V. A., Kveglis L. I., Volochaev M. N., Velikanov D. A.
Заглавие : Structure and magnetic properties of titanium nickelide nanoparticles synthesized by pulsed laser ablation method
Коллективы : International Conference on Films and Coatings
Место публикации : J. Phys. Conf. Ser.: IOP, 2017. - Vol. 857, Is. 1. - Ст.012007. - ISSN 17426588 (ISSN), DOI 10.1088/1742-6596/857/1/012007
Примечания : Cited References: 9
Ключевые слова (''Своб.индексиров.''): ablation--coatings--high resolution transmission electron microscopy--laser ablation--nanomagnetics--nanoparticles--synthesis (chemical)--titanium--transmission electron microscopy--equiatomic composition--magnetization values--ti atoms--titanium nickelide--pulsed lasers
Аннотация: We have successfully synthesized magnetic titanium nickelide nanoparticles with equiatomic composition by pulsed laser ablation method. Using transmission electron microscopy and microanalysis was revealed that particles represent the homogeneous conglomerates containing identical amount of Ni and Ti atoms. The magnetization value of nanoparticles was estimated.
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13.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Ershov A. E., Gerasimov V. S., Gavrilyuk A. P., Karpov S. V.
Заглавие : Surface plasmon resonances in liquid metal nanoparticles
Место публикации : Appl. Phys. B: Springer, 2017. - Vol. 123, Is. 6. - Ст.182. - ISSN 09462171 (ISSN), DOI 10.1007/s00340-017-6755-2
Примечания : This work was performed within the State contract of the RF Ministry of Education and Science for Siberian Federal University for scientifc research in 2017–2019. The numerical calculations were performed using the MVS-1000 M cluster at the Institute of Computational Modeling, Siberian Branch, Russian Academy of Sciences.
Ключевые слова (''Своб.индексиров.''): aggregates--dimers--gold--liquids--metal nanoparticles--nanoparticles--nonlinear optics--silver--surface plasmon resonance--au nanoparticle--colloidal aggregates--experimental values--experimental verification--metallic nanoparticles--nonlinear optical response--plasmonic nanoparticle--surface plasmon frequency--plasmons
Аннотация: We have shown significant suppression of resonant properties of metallic nanoparticles at the surface plasmon frequency during the phase transition “solid–liquid” in the basic materials of nanoplasmonics (Ag, Au). Using experimental values of the optical constants of liquid and solid metals, we have calculated nanoparticle plasmonic absorption spectra. The effect was demonstrated for single particles, dimers and trimers, as well as for the large multiparticle colloidal aggregates. Experimental verification was performed for single Au nanoparticles heated to the melting temperature and above up to full suppression of the surface plasmon resonance. It is emphasized that this effect may underlie the nonlinear optical response of composite materials containing plasmonic nanoparticles and their aggregates. © 2017, Springer-Verlag Berlin Heidelberg.
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14.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gerasimov V. S., Ershov A. E., Karpov S. V., Gavrilyuk A. P., Zakomirnyi V. I., Rasskazov I. L., Agren H., Polyutov S. P.
Заглавие : Thermal effects in systems of colloidal plasmonic nanoparticles in high-intensity pulsed laser fields [Invited]
Место публикации : Opt. Mater. Express: Optical Society of America, 2017. - Vol. 7, Is. 2. - P.555-568. - ISSN 21593930 (ISSN), DOI 10.1364/OME.7.000555
Примечания : Cited References: 68. - This work was performed within the State contract of the RF Ministry of Education and Science for Siberian Federal University for scientific research in 2017-2019 and SB RAS Program No II.2P (0358-2015-0010). The calculations were performed using the MVS-1000 M cluster at the Institute of Computational Modeling, Federal Research Center KSC SB RAS.
Ключевые слова (''Своб.индексиров.''): aggregates--gold--nanoparticles--plasmons--silver--ag nanoparticle--high intensity--light-induced process--nanoparticle aggregate--physical model--plasmonic nanoparticle--pulsed-laser field--thermal interaction--pulsed lasers
Аннотация: We have studied light induced processes in nanocolloids and composite materials containing ordered and disordered aggregates of plasmonic nanoparticles accompanied by their strong heating. A universal comprehensive physical model that combines mechanical, electrodynamical, and thermal interactions at nanoscale has been developed as a tool for investigations. This model was used to gain deep insight on phenomena that take place in nanoparticle aggregates under high-intensity pulsed laser radiation resulting in the suppression of nanoparticle resonant properties. Verification of the model was carried out with single colloidal Au and Ag nanoparticles and their aggregates. © 2017 Optical Society of America.
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15.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Zakomirnyi V. I., Rasskazov I. L., Gerasimov R.E., Ershov A. E., Karpov S. V., Polyutov S. P.
Заглавие : Multilayered gold nanoshells with ideal absorption for plasmonic photothermal therapy
Коллективы : International Conference on Coherent and Nonlinear Optics, International Conference on Lasers, Applications, and Technologies
Место публикации : The International Conference on Coherent and Nonlinear Optics; The Lasers, Applications, and Technologies ICONO/LAT 2016. - 2016. - Ст.IThL8. - P.68-69
Аннотация: In this paper we study multilayered spherical nanoparticles with ideal absorption for biomedical applications. The core of such particles consists of Si, SiO2 or alternative plasmonic materials, such as zinc oxide doped with aluminum, gallium and indium tin oxide whereas the outer shell consists of gold. We develop the algorithm for finding optimal geometry of ideally absorbing Au nanoparticles taking into account the quantum size effect that in multilayered metallic nanoshells plays a significant role.
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16.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Glushkov А. А., Tsipotan A. S. , Aleksandrovsky A. S., Slabko V. V.
Заглавие : Laser-induced interaction of multilevel quantum dots
Коллективы : International Conference on Coherent and Nonlinear Optics, International Conference on Lasers, Applications, and Technologies
Место публикации : ICONO/LAT 2016: conference program. - 2016. - Ст.IThL7
Аннотация: A theoretical model is developed for describing the laser-induced interaction of multilevel quantum dots(QDs). Spectral dependencies of interaction energy are calculated for QDs pair, for cases of identical QDs and those with differing transition wavelengths
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17.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Ikonnikov D. A., Voronov V. N., Molokeev M. S., Aleksandrovsky A. S.
Заглавие : Upconversion luminescence Of CsScF4 crystals doped with erbium and ytterbium
Коллективы : International Conference on Coherent and Nonlinear Optics, International Conference on Lasers, Applications, and Technologies
Место публикации : ICONO/LAT 2016: conference program. - 2016. - Ст.LTuH3
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18.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Ershov A. E., Gerasimov R.E., Rasskazov I. L., Zakomirnyi V. I., Gavrilyuk A.P., Karpov S. V., Polyutov S. P.
Заглавие : Thermal effects in optical plasmonic waveguides
Коллективы : International Conference on Coherent and Nonlinear Optics, International Conference on Lasers, Applications, and Technologies
Место публикации : The International Conference on Coherent and Nonlinear Optics; The Lasers, Applications, and Technologies ICONO/LAT 2016. - 2016. - Ст.IThL14. - P.79-80
Аннотация: We investigate the influence of the heating of the optical plasmonic waveguide in the form of chains of the plasmonic nanoparticles by laser radiation on its transmission properties
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19.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Parshin A. M., Shabanov V. F., Zyryanov V. Ya.
Заглавие : Light transmission of liquid crystal domains formed by polycarbonate surface
Место публикации : Opt. Mater. Express: Optical Society of America, 2016. - Vol. 6, Is. 9. - P.2841-2846. - ISSN 21593930 (ISSN), DOI 10.1364/OME.6.002841
Примечания : Cited References: 15. - This work was partially supported by the Russian Foundation for Basic Research (projects Nos. 15-02-06924 and 16-53-00073), and by the Siberian Branch of the Russian Academy of Sciences (SB RAS) through Complex Program No. II.2P 0358-2015-0011, 0358-2015-0010.
Ключевые слова (''Своб.индексиров.''): electric fields--electric lines--laser beams--liquid crystals--liquids--nematic liquid crystals--polycarbonates--refractive index--coherence distance--disclination lines--interference oscillations--liquid crystal layers--monochromatic lasers--polarization direction--polymer surfaces--radial orientation--light transmission
Аннотация: We investigate the optical transmission of a monochromatic laser beam passing through an individual domain of a nematic liquid crystal formed by the polycarbonate surface. The domain has the radial orientation structure with a disclination line on the polymer surface, which gradually transforms to "pseudoplanar" alignment at the coherence distance ? from the surface. The dependence of the optical transmittance on an electric field applied to the domain are different at various light polarization directions relative to the disclination lines and, in the absence of an analyzer, are accompanied by interference oscillations. To explain the results obtained, a domain is considered to be a gradient lens with the refractive index variable in the plane perpendicular to the laser beam and the resulting deflecting effect that was collected at the beam path through the liquid crystal layer. © 2016 Optical Society of America.
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20.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Ershov A. E., Gerasimov R.E., Rasskazov I. L., Zakomirnyi V. I., Gavrilyuk A.P., Karpov S. V., Polyutov S. P.
Заглавие : Surface plasmon resonance of Au nanoparticles in the vicinity of the melting temperature
Коллективы : International Conference on Coherent and Nonlinear Optics, International Conference on Lasers, Applications, and Technologies
Место публикации : The International Conference on Coherent and Nonlinear Optics; The Lasers, Applications, and Technologies ICONO/LAT 2016. - 2016. - Ст.IThL13. - P.77-78
Аннотация: We have demonstrated experimentally the significant suppression of resonant properties of single Au nanoparticles at the surface plasmon frequency during heating and subsequent transition to the liquid state.
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