Investigation of the up-conversion processes in Er3+:LiYF4 crystals 12

Authors

  • Fábio Henrique Jagosich Ipen
  • Luiz Vicente Gomes Tarelho Cnen/Ipen
  • Laércio Gomes Cnen/Ipen
  • Izilda Márcia Ranieri Cnen/Ipen

DOI:

https://doi.org/10.5585/exacta.v4i1.662

Keywords:

Energy-transfer up-conversion. Excited state absorption. Laser emission. Laser exitation.

Abstract

In this work, we investigated the up-conversion processes in LiYF4 (YLF) crystals doped with 1 mol% of Er3+ and containing 50 mol% of Er3+. The up-conversion processes include the excited state absorption (ESA) of pumping radiation process and the energy-transfer up-conversion (ETU) process. The luminescence lifetime was measured from decay curve of the 4S3/2 T 4I15/2 (556 nanometers [nm]) transition using pulsed laser excitations tuned between 967 and 999 nm from an optical parametric oscillator pumped by the second harmonic of a Q-switched Nd:YAG laser. We also studied the dipole-dipole and dipole-quadrupole interactions that occur among Er3+ ions in Er (50 mol%):YLF crystal. For this investigation, we used the Inokuti-Hirayama model that is due to an energy transfer between ions without involving the excitation migration through donors.

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Author Biographies

Fábio Henrique Jagosich, Ipen

Doutor em Tecnologia Nuclear [Materiais] – Ipen.

Luiz Vicente Gomes Tarelho, Cnen/Ipen

Doutor em Tecnologia Nuclear [Materiais] – Ipen; Pesquisador-colaborador – Cnen/Ipen.

Laércio Gomes, Cnen/Ipen

Doutor em Tecnologia Nuclear [Materiais] – Ipen; Pesquisador-colaborador – Cnen/Ipen.

Izilda Márcia Ranieri, Cnen/Ipen

Doutora em Tecnologia Nuclear [Materiais] – Ipen; Pesquisadora-colaboradora – Cnen/Ipen.

Published

2008-03-12

How to Cite

Jagosich, F. H., Tarelho, L. V. G., Gomes, L., & Ranieri, I. M. (2008). Investigation of the up-conversion processes in Er3+:LiYF4 crystals 12. Exacta, 4(1), 129–134. https://doi.org/10.5585/exacta.v4i1.662