Study of the Processes Induced by Femtosecond Laser Radiation in Thin Films and Molecular-Cluster Beams Using Ultrafast Electron Diffraction

被引：0

作者：

Aseyev, S. A. ^{[1
]}

Ischenko, A. A. ^{[2
]}

Kompanets, V. O. ^{[1
]}

Kochikov, I., V ^{[3
]}

Malinovskii, A. L. ^{[1
]}

Mironov, B. N. ^{[1
]}

Poydashev, D. G. ^{[1
]}

Chekalin, S., V ^{[1
]}

Ryabov, E. A. ^{[1
]}

机构：

[1] Russian Acad Sci, Inst Spect, Moscow 108840, Russia

[2] MIREA Russian Technol Univ, Lomonosov Inst Fine Chem Technol, Moscow 119571, Russia

[3] Moscow MV Lomonosov State Univ, Fac Phys, Moscow 119234, Russia

来源：

CRYSTALLOGRAPHY REPORTS | 2021年 / 66卷 / 06期

基金：

俄罗斯基础研究基金会;

关键词：

COHERENT OPTICAL PHONONS; STRUCTURAL DYNAMICS; BISMUTH; CHEMISTRY; STATE;

D O I：

10.1134/S106377452106002X

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

The coherent lattice dynamics in thin crystalline Sb and Bi films has been investigated using ultrafast electron diffraction. The samples were exposed to Ti:sapphire femtosecond laser radiation and probed by ultrashort electron pulses. The registered generation of coherent optical phonons in the crystals corresponded to the A(1g) and E-g modes and their combinations in Sb, as well as to the manifestation of the A(1g) mode and its first and second overtones in Bi. Detection of optical phonons with frequencies of up to 9 THz indicated that a temporal resolution at a level of similar to 100 fs was obtained. An ultrafast electron diffractometer for studying non-linear laser-induced processes in molecular and cluster beams has been developed based on a femtosecond electron source.

引用

页码：1031 / 1037

页数：7

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