Výsledky vyhledávání - "A. S. Lar'kin"

Robust multifilament arrays in air by Dammann grating

Autor: A. S. Lar’kin, Andrey B. Savel'ev, Nikita A. Zhidovtsev, D. S. Uryupina, D. V. Pushkarev, Svetlana N. Khonina, Yu. E. Geints, Olga G. Kosareva, Roman V Volkov, Sergey V. Karpeev, A.A. Karabutov, E. V. Mitina

Publikováno v: Optics express. 29(21)

We compare transverse structure evolution and energy deposition into the medium within focused multifilament arrays created using two different types of diffraction optical elements (DOEs): TEM11 phase plate and a Dammann grating. We show that the em

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d98127d3688922e5b560d26a4684d23e
https://pubmed.ncbi.nlm.nih.gov/34809215

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Robust multifilament arrays using Dammann phase grating

Autor: A. S. Lar’kin, Svetlana N. Khonina, E. V. Mitina, D. S. Uryupina, Alexander A. Karabutov, Andrei B Savel'ev, D. V. Pushkarev, Olga G. Kosareva, Roman V Volkov, Sergey V. Karpeev

Publikováno v: 2020 International Conference Laser Optics (ICLO).

We demonstrate a novel approach to create regular multifilament arrays under additional focusing by use of a Dammann grating. The employment of Dammann grating offers an advantage over the Hermite-Gaussian phase plates in terms of multifilament array

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::59a09e0105a0f9759daa9b6aa4b9317a
https://doi.org/10.1109/iclo48556.2020.9285767

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Femtosecond multifilament arrays in air using diffraction optical elements

Autor: A. S. Lar’kin, D. S. Uryupina, A.A. Karabutov, Roman V Volkov, D. V. Pushkarev, Svetlana N. Khonina, Andrei B Savel'ev, Sergey V. Karpeev, Olga G. Kosareva, E. V. Mitina

Publikováno v: Laser Communication and Propagation through the Atmosphere and Oceans IX.

We compare femtosecond hollow-core multifilament arrays created in the air with a TEM11 phase plate and a Dammann diffraction grating under additional loose focusing. Phase shifts introduced into the beam by the phase plate lead to zero intensity lin

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3837f3785dadb0ad5f145abb57749b57
https://doi.org/10.1117/12.2568616

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An electron magnetic spectrometer for experiments on a terawatt femtosecond laser

Autor: A. N. Mushkarenkov, A. A. Turinge, I. M. Mordvintsev, A. V. Rusakov, K.A. Ivanov, A. S. Lar’kin, I. N. Tsymbalov, V. G. Nedorezov, A. M. Lapik, Andrei B Savel'ev-Trofimov, N. A. Borisov, Valery Lisin, D.A. Gorlova, A. Polonski

Publikováno v: Instruments and Experimental Techniques. 60:690-694

Photonuclear methods used earlier in experiments at electron accelerators have been adapted for femtosecond pulsed lasers. In particular, the problem of measuring wide electron spectra under conditions of a high counting rate and, hence, a high proba

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8dc415a3f35c8b83f8ea07e6f8e067fe
https://doi.org/10.1134/s0020441217050074

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Direct Laser Writing of LaBGeO5 Crystal-in-Glass Waveguide Enabling Frequency Conversion

Autor: A. S. Lar’kin, Andrey Okhrimchuk, Vladimir N. Sigaev, Mikhail Yu. Presnyakov, T. O. Lipat’eva, Sergey V. Lotarev, Alexey S. Lipatiev

Publikováno v: Crystal Growth & Design. 17:4670-4675

We report on a technique of femtosecond laser-induced crystallization of glass, allowing improvement in the homogeneity of continuous crystalline tracks formed in lanthanum borogermanate glass using a focused beam with the elliptical-shaped waist cro

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fc18c9a374aac417a5b14ab9e5113cdd
https://doi.org/10.1021/acs.cgd.7b00581

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Generation of Hermite–Gaussian modes of high-power femtosecond laser radiation using binary-phase diffractive optical elements

Autor: A. S. Lar’kin, Svetlana N. Khonina, S. A. Degtyarev, D. V. Pushkarev, Andrei B Savel'ev

Publikováno v: Quantum Electronics. 46:733-737

We present the results of experiments on generation of Hermite–Gaussian modes up to the third order inclusive using binary-phase diffractive optical elements (DOEs) illuminated by subterawatt femtosecond laser pulses. We perform a compariosn of the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4075769bf92c8f553cbf432692d146ca
https://doi.org/10.1070/qel16114

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Microjet formation and hard x-ray production from a liquid metal target irradiated by intense femtosecond laser pulses

Autor: T. Bonnet, D. S. Uryupina, Andrei B Savel'ev, C. Fourment, F. Gobet, K. M. Spohr, Vladimir Tikhonchuk, B. Chimier, M. Versteegen, Jérôme Breil, M. Tarisien, F. Hannachi, A. S. Lar’kin, Fabien Dorchies, K.A. Ivanov, P. M. Leguay

Publikováno v: Physics of Plasma
Physics of Plasma, AIP Publishing, 2014, 21 (9), pp.093103. ⟨10.1063/1.4894099⟩

International audience; By using a liquid metal as a target one may significantly enhance the yield of hard x-rays with a sequence of two intense femtosecond laser pulses. The influence of the time delay between the two pulses is studied experimental

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8251c84fb7d1ca3bb81bd75df3287dcb
http://hdl.handle.net/20.500.12278/120437

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Prepulse induced microstructured plasma with melted and solid targets: formation, properties & prospects to relativistic laser-plasma interaction

Autor: Vladimir Tikhonchuk, D. S. Uryupina, K.A. Ivanov, V.Y. Bychenkov, A.V. Brantov, Yu. G. Sokolovskaya, Andrei B Savel'ev, Mikhail E. Povarnitsyn, S. A. Shulyapov, A. S. Lar’kin

Publikováno v: SPIE Proceedings.

The possibility of surface microstructuring of melted and solid target by a weak femtosecond laser pulse is demonstrated. An appreciable increase of hot electron energy is observed in 3D PIC simulations of interaction of ultrashort laser pulse with m

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::67c2dcc63f12aee2074a8c5ebe7aab97
https://doi.org/10.1117/12.2017164

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