Coherent Brillouin spectroscopy in a strongly scattering liquid by picosecond ultrasonics
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Nelson_Coherent Brillouin.pdf
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Author(s)
Maznev, Alexei
Manke, Kara Jean
Klieber, Christoph
Nelson, Keith Adam
Baek, S. H.
Eom, Chang-Beom
Date Issued
August 2011
Journal
Optics Letters
Publisher
Optical Society of America
Citation
Maznev, A. A., K. J. Manke, C. Klieber, Keith A. Nelson, S. H. Baek, and C. B. Eom. “Coherent Brillouin spectroscopy in a strongly scattering liquid by picosecond ultrasonics.” Optics Letters 36, no. 15 (August 1, 2011): 2925.© 2011 Optical Society of America.
Version
Final published version
Abstract
In a modification of a picosecond ultrasonic technique, a short acoustic pulse is launched into a liquid sample by a laser pulse absorbed in a semitransparent transducer film and is detected via coherent Brillouin scattering of a time-delayed probe pulse. With both excitation and probing performed from the transducer side, the arrangement is suitable for in vivo study of biological tissues. The signal is collected from a micrometer-thick layer next to the transducer and is not affected by the diffuse scattering of probe light deeper in the sample. The setup, utilizing a 33 nm thick single crystal SrRuO[subscript 3] transducer film, is tested on a full fat milk sample, with 11 GHz acoustic frequency recorded.
MIT Department
Massachusetts Institute of Technology. Department of Chemistry
Massachusetts Institute of Technology. Department of Materials Science and Engineering
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1364/OL.36.002925
