Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Andrey Akhmatkhanov"'
Autor:
Evgeniy Savelyev, Andrey Akhmatkhanov, Boris Slautin, Hervé Tronche, Florent Doutre, Tommaso Lunghi, Pascal Baldi, Vladimir Shur
Publikováno v:
Journal of Advanced Dielectrics, Vol 13, Iss 06 (2023)
The paper presents the results of an experimental study of the local polarization reversal and creation of domains by a biased tip of scanning probe microscope (SPM) in lithium niobate single crystals of congruent composition with a surface layer mod
Externí odkaz:
https://doaj.org/article/003bfb39e7804e21bf32e42c95755937
Autor:
Sergey Kudryashov, Pavel Danilov, Alexey Gorevoy, Volodymyr Kovalov, Mikhail Kosobokov, Andrey Akhmatkhanov, Boris Lisjikh, Anton Turygin, Evgeny Greshnyakov, Vladimir Shur
Publikováno v:
Photonics, Vol 10, Iss 12, p 1316 (2023)
Self-phase modulation (SPM) broadening of prompt laser spectra was studied in a transmission mode in natural and synthetic diamonds at variable laser wavelengths (515 and 1030 nm), pulse energies and widths (0.3–12 ps, positively chirped pulses), p
Externí odkaz:
https://doaj.org/article/7f813f02e3c74fcab4f00672a883e054
Autor:
Yulia Gulina, Jiaqi Zhu, Alexey Gorevoy, Mikhail Kosobokov, Anton Turygin, Boris Lisjikh, Andrey Akhmatkhanov, Vladimir Shur, Sergey Kudryashov
Publikováno v:
Photonics, Vol 10, Iss 5, p 582 (2023)
Double-track microstructures were induced in the bulk of a z-cut lithium niobate crystal by 1030 nm 240 fs ultrashort laser pulses with a repetition rate of 100 kHz at variable pulse energies exceeding the critical Kerr self-focusing power. The micro
Externí odkaz:
https://doaj.org/article/ced46c15a23246d0a1214bb89d20ccaa
Autor:
Evgeniy Savelyev, Andrey Akhmatkhanov, Mikhail Kosobokov, Hervé Tronche, Florent Doutre, Tommaso Lunghi, Pascal Baldi, Vladimir Shur
Publikováno v:
Crystals, Vol 13, Iss 1, p 72 (2023)
The results of an experimental study of the abnormal domain structure kinetics in lithium niobate single crystals with a surface layer modified by soft proton exchange are presented. Domain switching in a wide field range allowed two qualitatively di
Externí odkaz:
https://doaj.org/article/c739e39ba2714deb926cde47042c4836
Autor:
Sergey Kudryashov, Alexey Rupasov, Mikhail Kosobokov, Andrey Akhmatkhanov, George Krasin, Pavel Danilov, Boris Lisjikh, Alexander Abramov, Evgeny Greshnyakov, Evgeny Kuzmin, Michael Kovalev, Vladimir Shur
Publikováno v:
Nanomaterials, Vol 12, Iss 23, p 4303 (2022)
The ultrafast interaction of tightly focused femtosecond laser pulses with bulk dielectric media in direct laser writing (inscription) regimes is known to proceed via complex multi-scale light, plasma and material modification nanopatterns, which are
Externí odkaz:
https://doaj.org/article/6328414b1d6242b896bd2a8847a4ab58
Autor:
Sergey Kudryashov, Alexey Rupasov, Mikhail Kosobokov, Andrey Akhmatkhanov, George Krasin, Pavel Danilov, Boris Lisjikh, Anton Turygin, Evgeny Greshnyakov, Michael Kovalev, Artem Efimov, Vladimir Shur
Publikováno v:
Nanomaterials, Vol 12, Iss 23, p 4147 (2022)
Ferroelectric nanodomains were formed in bulk lithium niobate single crystals near nanostructured microtracks laser-inscribed by 1030-nm 0.3-ps ultrashort laser pulses at variable pulse energies in sub- and weakly filamentary laser nanopatterning reg
Externí odkaz:
https://doaj.org/article/624e85665bef40269d5713c3140d6ab5
Autor:
Sergey Kudryashov, Alexey Rupasov, Roman Zakoldaev, Mikhail Smaev, Aleksandr Kuchmizhak, Alexander Zolot’ko, Michail Kosobokov, Andrey Akhmatkhanov, Vladimir Shur
Publikováno v:
Nanomaterials, Vol 12, Iss 20, p 3613 (2022)
The inscription regimes and formation mechanisms of form-birefringent microstructures inside nano-porous fused silica by tightly focused 1030- and 515-nm ultrashort laser pulses of variable energy levels and pulsewidths in the sub-filamentary regime
Externí odkaz:
https://doaj.org/article/68ca70fd4d284785897f76a05b364ca9
Autor:
Andrey Akhmatkhanov, Constantine Plashinnov, Maxim Nebogatikov, Evgenii Milov, Ilya Shnaidshtein, Vladimir Shur
Publikováno v:
Crystals, Vol 10, Iss 7, p 583 (2020)
LaBGeO5 (LBGO) crystals are unique ferroelectric materials for manufacturing highly efficient UV laser sources based on frequency conversion. This is due to their low cut-off wavelength, high nonlinear-optical coefficients, and non-hygroscopicity. Pe
Externí odkaz:
https://doaj.org/article/ce683ea0791145628fb1546aac51950a
Publikováno v:
Crystals, Vol 8, Iss 8, p 315 (2018)
Studies of polarization reversal processes in potassium titanyl phosphate (KTiOPO4, KTP) single crystals with surface dielectric layer are important due to their potential applications as the basis of bottom-up technology for creation of periodically
Externí odkaz:
https://doaj.org/article/7ea4b7bc740d499f9e3af1960551cd37
Publikováno v:
Journal of Advanced Dielectrics, Vol 5, Iss 2, Pp 1550015-1-1550015-12 (2015)
The recent achievements in studying the self-assembled evolution of micro- and nanoscale domain structures in uniaxial single crystalline ferroelectrics lithium niobate and lithium tantalate have been reviewed. The results obtained by visualization o
Externí odkaz:
https://doaj.org/article/c18036925f744061a175e278866afc6b