학술논문
Frequency-selective excitation of high-wavevector phonons.
Document Type
Article
Author
Source
Subject
*PHONONS
*GERMANIUM
*INTERFEROMETERS
*LASER pulses
*SCATTERING (Physics)
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*
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*
Language
ISSN
0003-6951
Abstract
We demonstrate the selective excitation of a narrow frequency band of TA phonons throughout the Brillouin zone of germanium using a sinusoidally modulated picosecond laser pulse. The pulse is produced through the combination of two chirped and delayed pulses using a stabilized interferometer. The phonon excitations are probed by time- and momentum- resolved x-ray diffuse scattering. [ABSTRACT FROM AUTHOR]