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Proceedings Paper

Measurement of energy transfer upconversion in Nd:YAG via the z-scan technique
Author(s): R. P. Yan; S. J. Yoon; S. J. Beecher; J. I. Mackenzie
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Paper Abstract

We present the determination of the energy transfer upconversion (ETU) coefficient for Nd:YAG via the z-scan technique, achieved by studying the irradiance dependence of the transmission of a pump laser tuned to the absorption peak around 808 nm. A spatially dependent two-level rate equation model has been utilized to predict the transmission dependence as a function of the sample’s position in the z-scan experiment, with the ETU coefficient the only free parameter. Comparing experimental results with the model’s output, the ETU coefficient for 1 at.% Nd:YAG is determined to be 5.1 ± 0.4 x 10-17 cm3/s.

Paper Details

Date Published: 9 May 2014
PDF: 6 pages
Proc. SPIE 9135, Laser Sources and Applications II, 913525 (9 May 2014); doi: 10.1117/12.2054307
Show Author Affiliations
R. P. Yan, Univ. of Southampton (United Kingdom)
Harbin Institute of Technology (China)
S. J. Yoon, Univ. of Southampton (United Kingdom)
S. J. Beecher, Univ. of Southampton (United Kingdom)
J. I. Mackenzie, Univ. of Southampton (United Kingdom)

Published in SPIE Proceedings Vol. 9135:
Laser Sources and Applications II
Jacob I. Mackenzie; Helena JelÍnková; Takunori Taira; Marwan Abdou Ahmed, Editor(s)

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