Title :
Coherent phonons in polycrystalline bismuth film monitored by ultrafast electron diffraction
Author :
Bugayev, A. ; Esmail, A. ; Abdel-Fattah, M. ; Elsayed-Ali, H.E.
Author_Institution :
Appl. Res. Center, Old Dominion Univ., Norfolk, VA, USA
Abstract :
The generation of coherent phonons in polycrystalline bismuth film 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 anisotropy in the energy transfer rate of coherent optical phonons is discussed.
Keywords :
bismuth; electron diffraction; high-speed optical techniques; metallic thin films; phonons; (024) lattice planes; (110) lattice planes; (202) lattice planes; Bi; coherent optical phonons; energy transfer rate; polycrystalline bismuth film; ultrafast time-resolved electron diffraction; Bismuth; Diffraction; Lattices; Optical diffraction; Optical pulses; Phonons; Ultrafast optics;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2011 Conference on
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-4577-1223-4
