Time-domain Brillouin scattering for the determination of laser-induced temperature gradients in liquids
Name
1702.01078.pdf
Size
2.63 MB
Format
Adobe PDF
Checksum (MD5)
077416899f24f4aab6f241ad611a24c9
Author(s)
Chaban, Ievgeniia
Busselez, Rémi
Gusev, Vitalyi E.
Pezeril, Thomas
Shin, Hyun Doug
Klieber, Christoph
Nelson, Keith Adam
Date Issued
July 2017
Journal
Review of Scientific Instruments
Publisher
American Institute of Physics (AIP)
Citation
Chaban, Ievgeniia et al. “Time-Domain Brillouin Scattering for the Determination of Laser-Induced Temperature Gradients in Liquids.” Review of Scientific Instruments 88, 7 (July 2017): 074904 © 2017 Author(s)
Version
Author's final manuscript
Abstract
We present an optical technique based on ultrafast photoacoustics to determine the local temperature distribution profile in liquid samples in contact with a laser heated optical transducer. This ultrafast pump-probe experiment uses time-domain Brillouin scattering (TDBS) to locally determine the light scattering frequency shift. As the te mperature influences the Brillouin scattering frequency, the TDBS signal probes the local laser-induced temperature distribution in the liquid. We demonstrate the relevance and the sensitivity of this technique for the measurement of the absolute laser-induced temperature gradient of a glass forming liquid prototype, glycerol, at different laser pump powers - i.e., different steady state background temperatures. Complementarily, our experiments illustrate how this TDBS technique can be applied to measure thermal diffusion in complex multilayer systems in contact with a surrounding liquid.
MIT Department
Massachusetts Institute of Technology. Department of Chemistry
Terms of Use
Creative Commons Attribution-Noncommercial-Share Alike
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1063/1.4993132
