Acta Physica Polonica A

Lifetime Measurements of the4S3/2Level in Erbium Pentaphosphate Monocrystal

Franciszek K. Kaczmarek, Henrik Malak

Published May 1, 1996• 0 citations

Abstract

Lifetime of the main fluorescence level, 4S3 '2 , of erbium pentaphosphate monocrystal was measured to be 380f20 ns.Direct excitation to higher energy levels, and also indirect excitation with the use of an infrared beam were applied.

DOI: 10.12693/aphyspola.89.669

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Acta Physica Polonica A

Lifetime Measurements of the4S3/2Level in Erbium Pentaphosphate Monocrystal

Franciszek K. Kaczmarek, Henrik Malak

Published May 1, 1996• 0 citations

Publisher

Abstract

DOI: 10.12693/aphyspola.89.669

Related papers

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Soviet Journal of Quantum ElectronicsSep 30, 19882 citations

Lifetime measurement of the fluorescent level, 4S3/2, of erbium-doped silica optical fibers.

Franciszek K. Kaczmarek, Jan Wójcik, Henryk M. Malak

Optica ApplicataJan 1, 19981 citation

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Lifetime measurement of the 5 s 5 p 1 P 1 state in strontium

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Physical Review AJul 1, 19859 citations

We present a direct lifetime measurement of the

5s5p{\phantom{\rule{0.16em}{0ex}}}^{1}{P}_{1}

state of strontium using time-correlated single-photon counting of laser-induced fluorescence in a hot atomic beam. To achieve fast switch-off times and a high signal-to-noise ratio, we excite the strontium atoms with a femtosecond pulsed laser at approximately 461 nm and collect the fluorescence onto a hybrid single-photon detector. Analysis of the measured exponential decay gives a lifetime of the

{}^{1}{P}_{1}

state of $\ensuremath{\tau}=(5.216\ifmmode\pm\else\textpm\fi{}0.{006}_{\text{stat}}\ifmmode\pm\else\textpm\fi{}0.{013}_{\text{sys}})$ ns, where all the systematic effects have been thoroughly considered.

The lifetimes of the 7

{\mathrm{}}^{2}

{P}_{1/2}^{o}

and 7

{\mathrm{}}^{2}

{P}_{3/2}^{o}

states of thallium have been measured for the first time by observing the fluorescence decay following two-photon resonant excitation in an atomic beam. The values obtained for these states are 61.9 and 48.4 ns, respectively, with an uncertainty of 2%. These results are in good quantitative agreement with the calculations of Bardsley and Norcross, which include the effect of core polarizability.