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Precision refractive index measurements of air, N2, O2, Ar, and CO2 with a frequency comb

J Zhang1, Z H Lu, L J Wang

  • 1Institute of Optics, Information and Photonics, Max-Planck Research Group and University Erlangen-Nuremberg, 91058 Erlangen, Germany.

Applied Optics
|June 12, 2008
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.
According to Hooke's law, the vibrational frequency is directly proportional to the...