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Time-resolved X-ray...
Time-resolved X-ray diffraction from coherent phonons during a laser-induced phase transition
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Lindenberg, A. M (author)
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Kang, I (author)
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Johnson, S. L (author)
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Missalla, T (author)
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Heimann, P. A (author)
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Chang, Z (author)
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- Larsson, Jörgen (author)
- Lund University,Lunds universitet,Atomfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Atomic Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH
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Bucksbaum, P. H (author)
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Kapteyn, H. C (author)
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Padmore, H. A (author)
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Lee, R. W (author)
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Wark, J. S (author)
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Falcone, R. W (author)
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(creator_code:org_t)
- 2000
- 2000
- English.
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In: Physical Review Letters. - 1079-7114. ; 84:1, s. 111-114
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Abstract
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- 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.
Subject headings
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Lindenberg, A. M
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Kang, I
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Johnson, S. L
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Missalla, T
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Heimann, P. A
-
Chang, Z
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show more...
-
Larsson, Jörgen
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Bucksbaum, P. H
-
Kapteyn, H. C
-
Padmore, H. A
-
Lee, R. W
-
Wark, J. S
-
Falcone, R. W
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Atom and Molecul ...
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Physical Review ...
- By the university
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Lund University