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Excited state absorption in KCI:EU$latex^{2+}$

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Non-linear behavior with respect to exciting fluence of both photoacoustic and luminescent signals in KCI:Eu(2+) , excited by laser pulses at 355 nm, were analyzed in terms of excited state absorption (ESA). Measured ESA cross-sections for 355 and 420 nm were found to be $latex 1 \times 10^{(-17)} cm^{2}$ and $latex 2 \times 10^{(-18)} cm^{2}$ respectively.

Palabras clave
non-linear behavior
photoacoustic and luminescent signals
excited state absorption

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