Document Type
Article
Publication Date
2011
DOI
10.1063/1.3574888
Publication Title
AIP Advances
Volume
1
Issue
1
Pages
1-5
Abstract
The generation of coherent phonons in polycrystalline bismuth film excited with femtosecond laser pulse is observed by ultrafast time-resolved electron diffraction. The dynamics of the diffracted intensities from the (110), (202), and (024) lattice planes show pronounced oscillations at 130-150 GHz. The origin of these coherent acoustic phonons is discussed in view of optical phonon decay into two acoustic phonons. Different drop times in the intensity of the diffraction orders are observed and interpreted as anisotropy in the energy transfer rate of coherent optical phonons.
Original Publication Citation
Bugayev, A., Esmail, A., Abdel-Fattah, M., & Elsayed-Ali, H. E. (2011). Coherent phonons in bismuth film observed by ultrafast electron diffraction. AIP Advances, 1(1), 1-5. doi: 10.1063/1.3574888
Repository Citation
Bugayev, A., Esmail, A., Abdel-Fattah, M., & Elsayed-Ali, H. E. (2011). Coherent phonons in bismuth film observed by ultrafast electron diffraction. AIP Advances, 1(1), 1-5. doi: 10.1063/1.3574888
Comments
This article is distributed under a Creative Commons Attribution 3.0 Unported License.