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Optical phonon dynamics of GaAs studied with time-resolved terahertz spectroscopy

G C Cho1, P Y Han, X C Zhang

  • 1Department of Physics, Rensselaer Polytechnic Institute, Troy, New York 12180, USA.

Optics Letters
|December 11, 2007
PubMed

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A covalently bonded heteronuclear diatomic molecule can be modeled as two vibrating masses connected by a spring. The vibrational frequency of the bond can be expressed using an equation derived from Hooke's law, which describes how the force applied to stretch or compress a spring is proportional to the displacement of the spring. In this case, the atoms behave like masses, and the bond acts like a spring.
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