Frequency-selective excitation of high-wavevector phonons

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 ph...

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Bibliographic Details
Published in:	Applied physics letters Vol. 113; no. 17
Main Authors:	Teitelbaum, Samuel W., Henighan, Thomas, Liu, Hanzhe, Jiang, Mason P., Kozina, Michael, Zhu, Diling, Chollet, Matthieu, Sato, Takahiro, Glownia, James M., Trigo, Mariano, Reis, David A.
Format:	Journal Article
Language:	English
Published:	Melville American Institute of Physics 22-10-2018 American Institute of Physics (AIP)
Subjects:	Applied physics Brillouin zones CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS Excitation Fabry-Perot interferometers inelastic scattering MATERIALS SCIENCE optical interference Phonons quantum optics spectrograms ultrafast lasers X-ray diffuse scattering
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Summary:	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.
Bibliography:	USDOE Office of Science (SC), Basic Energy Sciences (BES) AC02-76SF00515
ISSN:	0003-6951 1077-3118
DOI:	10.1063/1.5047447