Propagation of picosecond acoustic pulses in semiconductor heterostructures probed by ultrafast X-ray diffraction

Author

Cavalleri, A. ; Siders, C.W. ; Guo, T. ; Wilson, K.R. ; Barty, C.P. ; Sokolowski-Tinten, K. ; von der Linde, D. ; Kammler, M. ; Horn von Hoegen, M.

Author_Institution

Dept. of Chem. & Biochem., California Univ., San Diego, La Jolla, CA, USA

fYear

1992

fDate

23-28 May 1992

Firstpage

42583

Lastpage

42584

Abstract

Summary form only given. We present the first optical-pump X-ray probe study on coherent lattice dynamics in semiconductor heterostructures. We have observed propagation of optically generated picosecond acoustic pulses within crystalline Ge films and into the underlying Si substrate, where 20 femtometer lattice compression was observed.

Keywords

X-ray diffraction; acoustic pulses; elemental semiconductors; germanium; interface phonons; optical pumping; semiconductor heterojunctions; Ge-Si; Si; coherent lattice dynamics; crystalline Ge films; lattice compression; optical-pump X-ray probe study; optically generated picosecond acoustic pulses; picosecond acoustic pulse propagation; semiconductor heterostructures; ultrafast X-ray diffraction; underlying Si substrate; Acoustic propagation; Acoustic pulses; Crystallization; Lattices; Optical films; Optical propagation; Optical pulse generation; Probes; Semiconductor films; Ultrafast optics;

fLanguage

English

Publisher

ieee

Conference_Titel

Quantum Electronics and Laser Science Conference, 1999. QELS '99. Technical Digest. Summaries of Papers Presented at the

Conference_Location

Baltimore, MD, USA

Print_ISBN

1-55752-576-X

Type

conf

DOI

10.1109/QELS.1999.807674

Filename

807674