caa a22 4500 445368063 CHVBK 20180317142937.0 cr unu---uuuuu 170323e20110401xx s 000 0 eng 10.1007/s00340-010-4207-3 doi (NATIONALLICENCE)springer-10.1007/s00340-010-4207-3 The two-photon absorption spectrum of ruby and its role indistributed optical fibre sensing [Elektronische Daten] [C. Dalzell, T. Han, I. Ruddock] The two-photon absorption spectrum and cross-section (δ) for ruby (Cr3+:sapphire) have been measured over the 0.8-1.2μm wavelength range at 25°C. Absolute values of δ were obtained by comparing the fluorescence yield for two-photon excitation with that for single-photon excitation of the same ionic transition under identical illumination conditions. The maximum values of δ are 4.6×10−3GM for o-polarisation and 5.9×10−3 GM for e-polarisation at 840nm. The relevance of these measurements to distributed optical fibre sensing is briefly discussed. Springer-Verlag, 2010 Dalzell C. Nonlinear Spectroscopy and Sensing, Department of Physics, SUPA, University of Strathclyde, G4 0NG, Glasgow, UK aut Han T. Nonlinear Spectroscopy and Sensing, Department of Physics, SUPA, University of Strathclyde, G4 0NG, Glasgow, UK aut Ruddock I. Nonlinear Spectroscopy and Sensing, Department of Physics, SUPA, University of Strathclyde, G4 0NG, Glasgow, UK aut Applied Physics B Springer-Verlag 103/1(2011-04-01), 113-116 0946-2171 103:1<113 2011 103 340 https://doi.org/10.1007/s00340-010-4207-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00340-010-4207-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Dalzell C. Nonlinear Spectroscopy and Sensing, Department of Physics, SUPA, University of Strathclyde, G4 0NG, Glasgow, UK aut NATIONALLICENCE 700 1- Han T. Nonlinear Spectroscopy and Sensing, Department of Physics, SUPA, University of Strathclyde, G4 0NG, Glasgow, UK aut NATIONALLICENCE 700 1- Ruddock I. Nonlinear Spectroscopy and Sensing, Department of Physics, SUPA, University of Strathclyde, G4 0NG, Glasgow, UK aut NATIONALLICENCE 773 0- Applied Physics B Springer-Verlag 103/1(2011-04-01), 113-116 0946-2171 103:1<113 2011 103 340 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer