Measuring phonon dephasing with ultrafast pulses using Raman spectral interference

Waldermann, F. C., Sussman, Benjamin J., Nunn, J., Lorenz, V. O., Lee, K. C., Surmacz, K., Lee, K. H., Jaksch, D., Walmsley, I. A., Spizziri, P., Olivero, P. and Prawer, S. (2008) Measuring phonon dephasing with ultrafast pulses using Raman spectral interference. Physical Review B, 78 15: 155201-1-155201-6. doi:10.1103/PhysRevB.78.155201

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Author Waldermann, F. C.
Sussman, Benjamin J.
Nunn, J.
Lorenz, V. O.
Lee, K. C.
Surmacz, K.
Lee, K. H.
Jaksch, D.
Walmsley, I. A.
Spizziri, P.
Olivero, P.
Prawer, S.
Title Measuring phonon dephasing with ultrafast pulses using Raman spectral interference
Journal name Physical Review B   Check publisher's open access policy
ISSN 1098-0121
Publication date 2008-10-15
Sub-type Article (original research)
DOI 10.1103/PhysRevB.78.155201
Open Access Status File (Publisher version)
Volume 78
Issue 15
Start page 155201-1
End page 155201-6
Total pages 6
Editor P. D. Adams
Place of publication College Park, MD, United States
Publisher American Physical Society
Language eng
Subject 0206 Quantum Physics
Formatted abstract
A technique to measure the decoherence time of optical phonons in a solid is presented. Phonons are excited with a pair of time-delayed 80 fs near infrared pulses via spontaneous transient Raman scattering. The spectral fringe visibility of the resulting Raman pulse pair, as a function of time delay, is used to measure the phonon dephasing time. The method avoids the need to use either narrow band or few femtosecond pulses and is useful for low phonon excitations. The dephasing time of phonons created in bulk diamond is measured to be τ=6.8 ps (Δν=1.56 cm−1).

Keyword Quantum decoherence
Phononic materials
Transient coherent ultrafast phonon spectroscopy
Optical phonons
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
School of Mathematics and Physics
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Citation counts: TR Web of Science Citation Count  Cited 22 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 23 times in Scopus Article | Citations
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Created: Fri, 22 Jan 2010, 09:24:51 EST by Jon Swabey on behalf of Faculty of Science