Picosecond x-ray studies of coherent folded acoustic phonons in a periodic semiconductor heterostructure
Sondhauss, Peter LU ; Larsson, Jörgen LU
; Harbst, Michael
LU
; Naylor, Graham
; Plech, Anton
; Scheidt, Kees-Bertus
; Synnergren, Ola
LU
; Wulff, Michael
and Wark, Justin
(2006)
Ultrafast Phenomena in Semiconductors and Nanostructure Materials X
6118.
p.1180-1180
- Abstract
- Zone folded coherent acoustic phonons were generated in a multilayered GaSb/InAs epitaxial heterostructure via rapid heating by femtosecond laser pulses. These phonons were probed by means of ultrafast x-ray diffraction. Phonons both from the fundamental acoustic branch and the first back-folded branch were detected. This represents the first clear evidence for phonon branch folding based directly on the atomic motion to which x-ray diffraction is sensitive. From a comparison of the measured phonon-modulated x-ray reflectivity with simulations, evidence was found for a reduction of the laser penetration depth. This reduction can be explained by the self-modulation of the absorption index due to photogenerated free carriers.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/617172
- author
- Sondhauss, Peter
LU
; Larsson, Jörgen
LU
; Harbst, Michael
LU
; Naylor, Graham
; Plech, Anton
; Scheidt, Kees-Bertus
; Synnergren, Ola
LU
; Wulff, Michael
and Wark, Justin
- organization
- publishing date
- 2006
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- Zone-folded phonons, Time resolved X-ray diffraction, Coherent phonons
- host publication
- Proceedings of SPIE - The International Society for Optical Engineering
- volume
- 6118
- pages
- 1180 - 1180
- publisher
- International Society for Optical Engineering
- conference name
- Ultrafast Phenomena in Semiconductors and Nanostructure Materials X
- conference location
- San Jose, CA, United States
- conference dates
- 2006-01-23 - 2006-01-25
- external identifiers
-
- wos:000237251300029
- scopus:33646704979
- ISSN
- 0277-786X
- 1996-756X
- DOI
- 10.1117/12.641144
- language
- English
- LU publication?
- yes
- id
- 77cbee04-fb42-400b-bd6c-780b0dce4a88 (old id 617172)
- date added to LUP
- 2016-04-01 11:42:31
- date last changed
- 2024-10-08 06:51:17
@inproceedings{77cbee04-fb42-400b-bd6c-780b0dce4a88,
abstract = {{Zone folded coherent acoustic phonons were generated in a multilayered GaSb/InAs epitaxial heterostructure via rapid heating by femtosecond laser pulses. These phonons were probed by means of ultrafast x-ray diffraction. Phonons both from the fundamental acoustic branch and the first back-folded branch were detected. This represents the first clear evidence for phonon branch folding based directly on the atomic motion to which x-ray diffraction is sensitive. From a comparison of the measured phonon-modulated x-ray reflectivity with simulations, evidence was found for a reduction of the laser penetration depth. This reduction can be explained by the self-modulation of the absorption index due to photogenerated free carriers.}},
author = {{Sondhauss, Peter and Larsson, Jörgen and Harbst, Michael and Naylor, Graham and Plech, Anton and Scheidt, Kees-Bertus and Synnergren, Ola and Wulff, Michael and Wark, Justin}},
booktitle = {{Proceedings of SPIE - The International Society for Optical Engineering}},
issn = {{0277-786X}},
keywords = {{Zone-folded phonons; Time resolved X-ray diffraction; Coherent phonons}},
language = {{eng}},
pages = {{1180--1180}},
publisher = {{International Society for Optical Engineering}},
title = {{Picosecond x-ray studies of coherent folded acoustic phonons in a periodic semiconductor heterostructure}},
url = {{http://dx.doi.org/10.1117/12.641144}},
doi = {{10.1117/12.641144}},
volume = {{6118}},
year = {{2006}},
}