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Picosecond Optical Excitation of Phonons in Amorphous As2Te3

  • C. Thomsen
  • J. Strait
  • Z. Vardeny
  • H. J. Maris
  • J. Tauc
  • J. J. Hauser
Conference paper
  • 126 Downloads
Part of the Springer Series in Chemical Physics book series (CHEMICAL, volume 38)

Abstract

We present a novel method of creating phonon excitations in a thin film of a chalcogenide glass. Phonon generation and the detection is done optically and thus allows measurement with picosecond time resolution. Current methods of studying phonon propagation involve ultrasonics or heat-pulse techniques. These use electronics, and the time resolution is limited to nanoseconds. Our picosecond method is a promising tool for studying propagation of phonons with extremely short mean free paths. As a demonstration of this method we measured the sound velocity in a film of a-SiO2 and compare it with a computer simulation.

Keywords

Sound Velocity Stress Wave Sapphire Substrate Chalcogenide Glass Deformation Potential 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

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Copyright information

© Springer-Verlag Berlin Heidelberg 1984

Authors and Affiliations

  • C. Thomsen
    • 1
  • J. Strait
    • 1
  • Z. Vardeny
    • 3
  • H. J. Maris
    • 1
  • J. Tauc
    • 1
  • J. J. Hauser
    • 2
  1. 1.Department of Physics and Division of EngineeringBrown UniversityProvidenceUSA
  2. 2.AT & T Bell LaboratoriesMurray HillUSA
  3. 3.Solid State InstituteTechnionHaifaIsrael

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