Distributed crystal fiber sensing for extreme environments
Dalzell, Craig J. and Han, Thomas P. J. and Ruddock, Ivan S. (2012) Distributed crystal fiber sensing for extreme environments. IEEE Sensors Journal, 12 (1). pp. 164-167. ISSN 1530-437X (https://doi.org/10.1109/JSEN.2011.2115998)
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Distributed sensing of temperature can be achieved by using time-correlated two-photon excited fluorescence (TPF). To assess the extension of this technique to single-crystal fibers for high-temperature applications, various aspects are considered including the two-photon absorption cross-section (delta), dopant density, and the geometry of single crystal fibers. By comparing the fluorescence yield for two-photon excitation with that for single-photon excitation of the same transition, delta for ruby was measured over the 0.8-1.2 mu m range with maximum room temperature values of 5.9 x 10(-3) GM for e-polarization and 4.6 x 10(-3) GM for o-polarization at 840 nm. It is shown that values of this magnitude are adequate for a practical TPF-based crystal fiber sensor to be realized.
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Item type: Article ID code: 37144 Dates: DateEventJanuary 2012PublishedSubjects: Science > Physics > Solid state physics. Nanoscience Department: Faculty of Science > Physics Depositing user: Pure Administrator Date deposited: 27 Jan 2012 13:38 Last modified: 08 Apr 2024 19:46 Related URLs: URI: https://strathprints.strath.ac.uk/id/eprint/37144