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Optical limiting behavior of bismuth oxide-based glass in the visible range

By T.R. Oliveira, L.de S. Menezes, E.L. Falcão-Filho, A.S.L. Gomes, Cid B. de Araújo, K. Sakaguchi, F.P. Mezzapesa, I.C.S. Carvalho and P.G. Kazansky

Abstract

The authors report experimental results on the optical limiting behavior of a bismuth oxide-based glass by exciting the samples with nanosecond laser pulses at 532 and 598 nm. The results show that two-photon and free-carrier absorption processes contribute for the nonlinear absorption. Values for beta, the two-photon absorption coefficient, and sigma_e, the absorption cross section due to free carriers, were determined. The values for beta and sigma_e are dependent on the amount of bismuth oxide in the glass composition

Topics: QC, TK
Year: 2006
OAI identifier: oai:eprints.soton.ac.uk:46943
Provided by: e-Prints Soton

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