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Tomographic reconstruction of picosecond acoustic strain propagation
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10.1063/1.2432238
/content/aip/journal/apl/90/4/10.1063/1.2432238
http://aip.metastore.ingenta.com/content/aip/journal/apl/90/4/10.1063/1.2432238
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(Color online) Experimental setup. Inset: relative reflectivity change for (solid line) and exponential fit to thermoreflectance (dashed line). SHG: second-harmonic generation crystal.

Image of FIG. 2.
FIG. 2.

(Color online) (a) Density plot of the measured relative reflectivity variation , normalized by . (b) Experimentally reconstructed strain . (c) Simulated (for constant absorbed fluence). (d) Theoretically reconstructed . (e) at vs angle . (f) Reconstructed strain distributions at . In (e) and (f) the dots are experimental data, the dashed lines are fits using the same range of as in experiment, and the dotted-dashed lines are fits using angles 0°–89.5°.

Image of FIG. 3.
FIG. 3.

Optical phase change measured interferometrically, showing multiple acoustic echoes. Inset (a): time derivative of the phase change, proportional to the acoustic strain pulse shape for the first echo. Dotted line: fit. Inset (b): Fourier spectrum of the strain in (a). The shaded range corresponds to the angle-scanned experiment.

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/content/aip/journal/apl/90/4/10.1063/1.2432238
2007-01-26
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Tomographic reconstruction of picosecond acoustic strain propagation
http://aip.metastore.ingenta.com/content/aip/journal/apl/90/4/10.1063/1.2432238
10.1063/1.2432238
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