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Collapse and revival of large-amplitude coherent phonons: polarization interference versus quantum beats

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Abstract

We report femtosecond time-resolved measurements of lattice dynamics in Bi made at helium temperature over a wide range of excitation levels. We demonstrate that the collapse/revival of large-amplitude A1g coherent phonons is a polarization interference arising due to laterally inhomogeneous excitation

© 2014 Optical Society of America

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