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Optics Communications

Oscillator strengths of 4I→ transitions in Y3Al5O12-Er3+

Nikolay I. Agladze, Marina N. Popova, Evgeny A. Vinogradov, T. M. Murina, V I Zhekov

Published Mar 1, 1988• 10 citations
Publisher
DOI
10.1016/0030-4018(88)90101-0

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A study was made of various cases of a population inversion between the 4I11/2 and 4I13/2 levels in Y3Al5O12:Er3+ crystals. It is found that when nonradiative transitions from the upper levels to the active levels by the mechanism of multiphonon energy transfer are more probable, laser action occurs due to transitions between the Stark components of the 4I11/2 and 4I13/2 levels with the highest oscillator strengths. If nonradiative transitions due to ion-ion interaction are more probable, a red shift is observed in the lasing spectra.

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Journal of Applied Spectroscopy•Apr 1, 1988•1 citation
A study was made of various cases of a population inversion between the 4I11/2 and 4I13/2 levels in Y3Al5O12:Er3+ crystals. It is found that when nonradiative transitions from the upper levels to the active levels by the mechanism of multiphonon energy transfer are more probable, laser action occurs due to transitions between the Stark components of the 4I11/2 and 4I13/2 levels with the highest oscillator strengths. If nonradiative transitions due to ion-ion interaction are more probable, a red shift is observed in the lasing spectra.