Observation of coherent optical phonons excited by femtosecond laser radiation in Sb films by ultrafast electron diffraction method
- Авторы: Mironov B.N.1, Kompanets V.O.1, Aseev S.A.1, Ischenko A.A.2, Kochikov I.V.3, Misochko O.V.4, Chekalin S.V.1, Ryabov E.A.1
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Учреждения:
- Institute of Spectroscopy
- Institute of High Chemical Technologies
- Moscow State University
- Institute of Solid State Physics
- Выпуск: Том 124, № 3 (2017)
- Страницы: 422-428
- Раздел: Atoms, Molecules, Optics
- URL: https://journals.rcsi.science/1063-7761/article/view/192002
- DOI: https://doi.org/10.1134/S1063776117020145
- ID: 192002
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Аннотация
The generation of coherent optical phonons in a polycrystalline antimony film sample has been investigated using femtosecond electron diffraction method. Phonon vibrations have been induced in the Sb sample by the main harmonic of a femtosecond Ti:Sa laser (λ = 800 nm) and probed by a pulsed ultrashort photoelectron beam synchronized with the pump laser. The diffraction patterns recorded at different times relative to the pump laser pulse display oscillations of electron diffraction intensity corresponding to the frequencies of vibrations of optical phonons: totally symmetric (A1g) and twofold degenerate (Eg) phonon modes. The frequencies that correspond to combinations of these phonon modes in the Sb sample have also been experimentally observed.
Об авторах
B. Mironov
Institute of Spectroscopy
Email: isanfemto@yandex.ru
Россия, Troitsk, Moscow, 108840
V. Kompanets
Institute of Spectroscopy
Email: isanfemto@yandex.ru
Россия, Troitsk, Moscow, 108840
S. Aseev
Institute of Spectroscopy
Автор, ответственный за переписку.
Email: isanfemto@yandex.ru
Россия, Troitsk, Moscow, 108840
A. Ischenko
Institute of High Chemical Technologies
Email: isanfemto@yandex.ru
Россия, Moscow, 119571
I. Kochikov
Moscow State University
Email: isanfemto@yandex.ru
Россия, Moscow, 119991
O. Misochko
Institute of Solid State Physics
Email: isanfemto@yandex.ru
Россия, Chernogolovka, Moscow oblast, 142432
S. Chekalin
Institute of Spectroscopy
Email: isanfemto@yandex.ru
Россия, Troitsk, Moscow, 108840
E. Ryabov
Institute of Spectroscopy
Email: isanfemto@yandex.ru
Россия, Troitsk, Moscow, 108840
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