Coherent acoustic phonons in nanostructures investigated by asynchronous optical sampling

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2006
Autor:innen
Hudert, Florian
Cerna, Roland
Köhler, K.
Wiemer, Maik
Mantl, Siegfried
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Proceedings of SPIE 2006. 2006. Available under: doi: 10.1117/12.760395
Zusammenfassung

A new optical pump-probe technique is implemented for the investigation of acoustic phonon dynamics in the GHz to THz frequency range which is based on two asynchronously linked femtosecond lasers. Asynchronous optical sampling (ASOPS) provides the performance of on all-optical oscilloscope and allows us to record optically induced lattice dynamics over nanosecond times with 200 femtoseconds resolution at scan rates of 10 kHz. The generation of coherent acoustic phonons and their propagation and decay dynamics are investigated in semiconductor heterostructures, layered nanoscale materials of relevance for microelectronics, and X-ray mirrors. Changes of the optical properties of tailored semiconductor heterostructures associated with coherent phonon dynamics open the pathway for the modulation of optical signals at up to THz frequencies.

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530 Physik
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coherent phonons, asynchronous optical sampling, ASOPS, picosecond ultrasonics, GHz modulation, metrology, EUV mirrors, wafer bonding
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ISO 690DEKORSY, Thomas, Florian HUDERT, Roland CERNA, Hanjo SCHÄFER, Christof JANKE, Albrecht BARTELS, K. KÖHLER, Stefan BRAUN, Maik WIEMER, Siegfried MANTL, 2006. Coherent acoustic phonons in nanostructures investigated by asynchronous optical sampling. In: Proceedings of SPIE 2006. 2006. Available under: doi: 10.1117/12.760395
BibTex
@inproceedings{Dekorsy2006Coher-4691,
  year={2006},
  doi={10.1117/12.760395},
  title={Coherent acoustic phonons in nanostructures investigated by asynchronous optical sampling},
  booktitle={Proceedings of SPIE 2006},
  author={Dekorsy, Thomas and Hudert, Florian and Cerna, Roland and Schäfer, Hanjo and Janke, Christof and Bartels, Albrecht and Köhler, K. and Braun, Stefan and Wiemer, Maik and Mantl, Siegfried}
}
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