| Autor: |
Manke, K. J., Maznev, A. A., Klieber, C., Shalagatskyi, V., Temnov, V. V., Makarov, D., Baek, S. -H., Eom, C. -B., Nelson, K. A. |
| Rok vydání: |
2013 |
| Předmět: |
|
| Zdroj: |
Appl. Phys. Lett. 103, 173104 (2013) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1063/1.4826210 |
| Popis: |
The detection of ultrashort laser-generated acoustic pulses at a metal surface and the reconstruction of the acoustic strain profile are investigated. A 2 ps-long acoustic pulse generated in an SrRuO$_{3}$ layer propagates through an adjacent gold layer and is detected at its surface by a reflected probe pulse. We show that the intricate shape of the transient reflectivity waveform and the ability to resolve acoustic pulses shorter than the optical skin depth are controlled by a single parameter, which is determined by the ratio of the real and imaginary parts of the photoelastic constant of the material. We also demonstrate a Fourier transform-based algorithm that can be used to extract acoustic strain profiles from transient reflectivity measurements. |
| Databáze: |
arXiv |
| Externí odkaz: |
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