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1.
Вид документа
: Статья из журнала
Шифр издания
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Автор(ы)
: Arkhipkin V. G., Gunyakov V. A., Myslivets S. A., Zyryanov V. Y., Shabanov V. F., Lee W.
Заглавие
: Electro- and magneto-optical switching of defect modes in one- dimensional photonic crystals
Место публикации
: J. Exp. Theor. Phys.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2011. - Vol. 112, Is. 4. - P577-587. - ISSN 1063-7761,
DOI
10.1134/S1063776111040017
Примечания
: Cited References: 35. - We thank A. M. Parshin for help with the magneto-optical measurements. This work was supported by grant no. NSC98-2923-M-033-001-MY3; nos. 27.1 and 9.1 RAS; nos. 5 and 144 SB RAS; State contract no. 02.740.11.0220 ("Scientific and Scientific-Pedagogical Personnel of Innovational Russia" Federal Goal-Oriented Program).
Предметные рубрики:
NEMATIC LIQUID-CRYSTALS
Ключевые слова
(''Своб.индексиров.''): crossed polarizers--defect mode--experimental data--magnetic field strengths--magneto-optical--polarized light waves--transmission spectrums--defects--light transmission--magnetic fields--magnetos--optical
switches
--photonic crystals
Аннотация:
The transmission spectra of polarized light waves in a photonic crystal/liquid crystal (PC/LC) cell placed between crossed polarizers and controlled by an electric or magnetic field have been studied experimentally and theoretically. Electro- and magneto-optical switching based on the interference of polarized defect modes has been demonstrated. The transmission spectra of the PC/LC cell have been calculated as a function of the voltage applied to the LC layer and the magnetic field strength. The results of the calculations agree well with the experimental data.
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2.
Вид документа
: Статья из журнала
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Автор(ы)
: Ponomarev A. V., Madronero J., Kolovsky A. R., Buchleitner A.
Заглавие
: Atomic current across an optical lattice
Место публикации
: Phys. Rev. Lett.: AMER PHYSICAL SOC, 2006. - Vol. 96, Is. 5. - Ст.50404. - ISSN 0031-9007,
DOI
10.1103/PhysRevLett.96.050404
Примечания
: Cited References: 18
Ключевые слова
(''Своб.индексиров.''): crystal lattices--electric conductance--fermions--
switches
--atomic current--microscopic dynamics--optical lattices--atomic physics
Аннотация:
We devise a microscopic model for the emergence of a collision-induced, fermionic atomic current across a tilted optical lattice. Tuning the-experimentally controllable-parameters of the microscopic dynamics allows us to switch from Ohmic to negative differential conductance.
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3.
Вид документа
: Статья из журнала
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Автор(ы)
: Popov A. K., Myslivets S. A., Slabko V. V., Tkachenko V. A., George T. F.
Заглавие
: Shaping light in backward-wave nonlinear hyperbolic metamaterials
Коллективы
: U. S. Army Research Office [W911NF-14-1-0619]; Ministry of Education and Science of the Russian Federation [3.6341.2017/6.7]
Место публикации
: Photonics. - 2018. - Vol. 5, Is. 2. - Ст.8. - ISSN 2304-6732,
DOI
10.3390/photonics5020008
Примечания
: Cited References: 46. - Alexander K. Popov acknowledges support by the U. S. Army Research Office under grant number W911NF-14-1-0619. Vitaly V. Slabko acknowledges support by the Ministry of Education and Science of the Russian Federation (project # 3.6341.2017/6.7).
Предметные рубрики:
NEGATIVE-INDEX METAMATERIALS
OPTICAL PARAMETRIC OSCILLATOR
Ключевые слова
(''Своб.индексиров.''): optical metamaterials--fundamental concepts in photonics--light-matter--interactions at the subwavelength and nanoscale--fundamental--understanding of linear and nonlinear optical processes in novel metamaterials underpinning photonic devices and components--advancing the frontier of nanophotonics with the associated nanoscience and nanotechnology--nanostructures that can serve as building blocks for nano-optical systems--use of nanotechnology in photonics--nonlinear nanophotonics--plasmonics and excitonics--subwavelength components and negative index materials--slowing, store, and processing light pulses--materials for optical sensing, for tunable optical delay lines, for optical buffers, for high extinction optical
switches
, for novel image processing hardware, and for highly-efficient wavelength converters
Аннотация:
Backward electromagnetic waves are extraordinary waves with contra-directed phase velocity and energy flux. Unusual properties of the coherent nonlinear optical coupling of the phase-matched ordinary and backward electromagnetic waves with contra-directed energy fluxes are described that enable greatly-enhanced frequency and propagation direction conversion, parametrical amplification, as well as control of shape of the light pulses. Extraordinary transient processes that emerge in such metamaterials in pulsed regimes are described. The results of the numerical simulation of particular plasmonic metamaterials with hyperbolic dispersion are presented, which prove the possibility to match phases of such coupled guided ordinary and backward electromagnetic waves. Particular properties of the outlined processes in the proposed metamaterial are demonstrated through numerical simulations. Potential applications include ultra-miniature amplifiers, frequency changing reflectors, modulators, pulse shapers, and remotely actuated sensors.
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4.
Вид документа
: Статья из журнала
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Автор(ы)
: Boldyrev K. N., Burlakov V. M., Gudim I. A., Gavrilkin S. Y., Popova M. N.
Заглавие
: Regulation of the phase transition temperature and hysteresis width by changing the composition of solid solution
Место публикации
: Phys. Rev. Mater. - 2021. - Vol. 5, Is. 9. - Ст.094414. - ISSN 24759953 (ISSN),
DOI
10.1103/PhysRevMaterials.5.094414
Примечания
: Cited References: 52. - This work is supported by the Russian Science Foundation under Grant No. 19-12-00413
Аннотация:
A detailed study of the structural phase transition in Eu1–xLaxFe3(BO3)4 mixed crystals as a function of composition is reported. By analyzing a frequency shift of an electronic f-f transition in high-resolution optical spectra of Eu3+ ions, we detected a decrease in the phase transition temperature Ts from 87.05 to 12.2 K (upon cooling) and a simultaneous increase in thermal hysteresis ΔTs from 0.29 to 4.7 K with increasing x from x=0 to x=0.12. A rectangular hysteresis loop was observed. The experimental Ts(x) and ΔTs(x) dependences are described within the developed analytical model utilizing linear decrease in Ts with x and treating the increase in ΔTs in terms of the impurity-related decrease in the interaction between some local order parameters. We argue that R1−xR′xFe3(BO3)4 solid solutions, where R and R′ are different rare-earth elements, can be used to implement optical storage devices and
switches
operating at any chosen temperature between 0 and 450 K. It is found that the changes in the composition and, correspondingly, structural phase transition parameters do not affect the magnetic phase transformation. Eu0.88La0.12Fe3(BO3)4 demonstrates the structural phase transition at about 12 K, well below the Néel temperature TN=32K.
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5.
Вид документа
: Статья из сборника (однотомник)
Шифр издания
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Автор(ы)
: Gunyakov V. A., Zyryanov V. Ya., Myslivets S. A., Arkhipkin V. G., Shabanov V. F.
Заглавие
: Electrically controllable optical switch based on one-dimensional photonic crystal
Коллективы
: International Conference on Advanced Optoelectronics and Lasers
Место публикации
: Proceedings of CAOL 2008: 4th International Conference on Advanced Optoelectronics and Lasers. - 2008. - 4th International Conference on Advanced Optoelectronics and Lasers, CAOL 2008 (29 September 2008 through 4 October 2008, Alushta, Crimea, ) Conference code: 74830. - С. 186-188. - ISBN 9781424419746 (ISBN),
DOI
10.1109/CAOL.2008.4671886
Ключевые слова
(''Своб.индексиров.''): detect mode--liquid crystal--photonic band gap--photonic crystal--crossed polarizers--detect mode--electric-field--electrooptical
switches
--light waves--spectral ranges--crystal atomic structure--crystal defects--energy gap--gallium alloys--light sources--liquid crystals--liquid lasers--nematic liquid crystals--optical devices--photonic crystals--photonic band gap
Аннотация:
Electrooptical switch within narrow spectral range has been demonstrated. The switch consisting of one-dimensional photonic crystal with a nematic liquid crystal defect layer was placed between two crossed polarizers. Principle of operation is based on the interference of the ordinary and extraordinary light waves passed across the device due to the electric-field induced coincidence of their wavelengths. © 2008 IEEE.
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