Crossref journal-article
AIP Publishing
Journal of Applied Physics (317)
Abstract

Picosecond thermoreflectance is an unprecedented powerful technique for nanoscale heat transfer analysis and metrology, but different sources of artifacts were reported in the literature making this technique difficult to use for long delay (several ns) thermal analysis. We present in this paper a new heterodyne picosecond thermoreflectance (HPTR) technique. As it uses two slightly frequency shifted lasers instead of a mechanical translation stage, it is possible to avoid all artifacts leading to erroneous thermal parameter identifications. The principle and set-up are described as well as the model. The signal delivered by the HPTR experiment is calculated for each excitation configurations, modulating or not the pump beam. We demonstrate the accuracy of the technique in the identification of the thermal conductivity of a 50 nm thick SiO2 layer. Then, we discuss the role of the modulation frequency for nanoscale heat transfer analysis.

Bibliography

Dilhaire, S., Pernot, G., Calbris, G., Rampnoux, J. M., & Grauby, S. (2011). Heterodyne picosecond thermoreflectance applied to nanoscale thermal metrology. Journal of Applied Physics, 110(11).

Authors 5
  1. S. Dilhaire (first)
  2. G. Pernot (additional)
  3. G. Calbris (additional)
  4. J. M. Rampnoux (additional)
  5. S. Grauby (additional)
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Dates
Type When
Created 13 years, 8 months ago (Dec. 9, 2011, 9:59 a.m.)
Deposited 2 years, 1 month ago (June 24, 2023, 10:07 p.m.)
Indexed 2 weeks, 5 days ago (Aug. 2, 2025, 1:06 a.m.)
Issued 13 years, 8 months ago (Dec. 1, 2011)
Published 13 years, 8 months ago (Dec. 1, 2011)
Published Online 13 years, 8 months ago (Dec. 8, 2011)
Published Print 13 years, 8 months ago (Dec. 1, 2011)
Funders 0

None

@article{Dilhaire_2011, title={Heterodyne picosecond thermoreflectance applied to nanoscale thermal metrology}, volume={110}, ISSN={1089-7550}, url={http://dx.doi.org/10.1063/1.3665129}, DOI={10.1063/1.3665129}, number={11}, journal={Journal of Applied Physics}, publisher={AIP Publishing}, author={Dilhaire, S. and Pernot, G. and Calbris, G. and Rampnoux, J. M. and Grauby, S.}, year={2011}, month=dec }