| Autor: |
J. Goldshteyn, Marc Herzog, Steffen Mitzscherling, Daniel Schick, André Bojahr, Lena Maerten, Matias Bargheer, Wolfram Leitenberger, Roman Shayduk, Peter Gaal |
| Rok vydání: |
2013 |
| Předmět: |
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| Zdroj: |
'Optics Express ', vol: 21, pages: 21188-21197 (2013) |
| ISSN: |
1094-4087 |
| Popis: |
We monitor how destructive interference of undesired phonon frequency components shapes a quasi-monochromatic hypersound wavepacket spectrum during its local real-time preparation by a nanometric transducer and follow the subsequent decay by nonlinear coupling. We prove each frequency component of an optical supercontinuum probe to be sensitive to one particular phonon wavevector in bulk material and cross-check this by ultrafast x-ray diffraction experiments with direct access to the lattice dynamics. Establishing reliable experimental techniques with direct access to the transient spectrum of the excitation is crucial for the interpretation in strongly nonlinear regimes, such as soliton formation. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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