Time-domain Brillouin Scattering as a Local Temperature Probe in Liquids

Authors :: Massachusetts Institute of Technology. Department of Chemistry
Chaban, Ievgeniia
Shin, Hyun D.
Klieber, Christoph
Busselez, Rémi
Gusev, Vitaly
Nelson, Keith Adam
Pezeril, Thomas
Massachusetts Institute of Technology. Department of Chemistry
Chaban, Ievgeniia
Shin, Hyun D.
Klieber, Christoph
Busselez, Rémi
Gusev, Vitaly
Nelson, Keith Adam
Pezeril, Thomas
Source :: arXiv
Publication Year :: 2020
Abstract: We present results of time-domain Brillouin scattering (TDBS) to determine the local temperature of liquids. TDBS is based on an ultrafast pump-probe technique to determine the light scattering frequency shift caused by the propagation of coherent acoustic waves in a sample. Since the temperature influences the Brillouin scattering frequency shift, the TDBS signal probes the local temperature of the liquid. Results for the extracted Brillouin scattering frequencies recorded at different liquid temperatures and at different laser powers are shown to demonstrate the usefulness of TDBS as a temperature probe. Keywords: acoustic; thermal conductivity; spectroscopy<br />United States. Department of Energy (Grant DE-FG02-00ER15087)<br />National Science Foundation (U.S.) (Grant CHE-0616939)<br />National Science Foundation (U.S.) (Grant DMR-0414895)<br />France. Agence nationale de la recherche (Grant ANR-12-BS09-0031-0)

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