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Upconversion assisted self-pulsing in a high-concentration erbium doped fibre laser

100%
Sergeyev S., O’Mahoney K., Popov S., Friberg A.
Open Physics
|
2010
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vol. 8
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issue 2
159-163
EN
We report results on experimental and theoretical characterisation of self-pulsing in high concentration erbium doped fibre laser which is free from erbium clusters. Unlike previous models of self-pulsing accounting for pair-induced quenching (PIQ) on the clustered erbium ions, new model has been developed with accounting for statistical nature of the excitation migration and upconversion and resonance-like pumpto-signal intensity noise transfer. The obtained results are in a good agreement with the experimental data.
2
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Vaaisible upconversion emission of Er3+-doped and Er3+/Yb3+-codoped LiInO2

88%
Djačanin L., Dramićanin M., Lukić-Petrović S., Petrović D., Nikolić M.
Open Physics
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2012
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vol. 10
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issue 2
519-523
EN
Lithium-indium oxide is a high-density (5.9 g·cm−3), wide band-gap semiconductor with promising applications for scintillating detection of solar neutrinos as well as for efficient phosphorescence when doped with Er3+ or Sm3+ ions. In this report, we demonstrate visible upconversion emission of Er3+-doped LiInO2 synthesized by a simple solid-state chemistry procedure and discuss mechanisms responsible for pumping the Er3+ ions to upper levels. Intense upconversion emission is observed in the green and red spectral regions under near-infrared excitation, and it is greatly enhanced by co-doping with Yb3+ ions. We also examined the upconversion intensity change as a function of temperature, and, consequently, possible applications of this material as a low-temperature sensor.
3
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Investigation and modelling of rare-earth activated waveguide structures

75%
Woliński W., Malinowski M., Mossakowska-Wyszyńska A., Piramidowicz R., Szczepański P.
|
2005
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vol. 53
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issue 2
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