Time-resolved X-ray diffraction from coherent phonons during a laser-induced phase transition
(2000) In Physical Review Letters 84(1). p.111-114- Abstract
- Time-resolved x-ray diffraction with picosecond temporal resolution is used to observe scattering from impulsively generated coherent acoustic phonons in laser-excited InSb crystals. The observed frequencies and damping rates are in agreement with a model based on dynamical diffraction theory coupled to analytic solutions for the laser-induced strain profile. The results are consistent with a 12 ps thermal electron-acoustic phonon coupling time together with an instantaneous component from the deformation-potential interaction. Above a critical laser fluence, we show that the first step in the transition to a disordered state is the excitation of large amplitude, coherent atomic motion.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/2258823
- author
- organization
- publishing date
- 2000
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review Letters
- volume
- 84
- issue
- 1
- pages
- 111 - 114
- publisher
- American Physical Society
- external identifiers
-
- scopus:0000389765
- ISSN
- 1079-7114
- DOI
- 10.1103/PhysRevLett.84.111
- language
- English
- LU publication?
- yes
- id
- a5aa852b-e62e-4123-adc9-7ad095c364ef (old id 2258823)
- date added to LUP
- 2016-04-04 07:58:30
- date last changed
- 2022-03-23 01:47:52
@article{a5aa852b-e62e-4123-adc9-7ad095c364ef, abstract = {{Time-resolved x-ray diffraction with picosecond temporal resolution is used to observe scattering from impulsively generated coherent acoustic phonons in laser-excited InSb crystals. The observed frequencies and damping rates are in agreement with a model based on dynamical diffraction theory coupled to analytic solutions for the laser-induced strain profile. The results are consistent with a 12 ps thermal electron-acoustic phonon coupling time together with an instantaneous component from the deformation-potential interaction. Above a critical laser fluence, we show that the first step in the transition to a disordered state is the excitation of large amplitude, coherent atomic motion.}}, author = {{Lindenberg, A. M and Kang, I and Johnson, S. L and Missalla, T and Heimann, P. A and Chang, Z and Larsson, Jörgen and Bucksbaum, P. H and Kapteyn, H. C and Padmore, H. A and Lee, R. W and Wark, J. S and Falcone, R. W}}, issn = {{1079-7114}}, language = {{eng}}, number = {{1}}, pages = {{111--114}}, publisher = {{American Physical Society}}, series = {{Physical Review Letters}}, title = {{Time-resolved X-ray diffraction from coherent phonons during a laser-induced phase transition}}, url = {{https://lup.lub.lu.se/search/files/5161188/2297404.pdf}}, doi = {{10.1103/PhysRevLett.84.111}}, volume = {{84}}, year = {{2000}}, }