Interest in Yb³⁺-doped materials has been increasing with advances of high-performance in GaAs laser diode which are ideally suited for pumping the Yb³⁺ ion between 905 and 980 nm [1]. Yb³⁺ is indeed the most promising ion that can be used in a non-Nd³⁺ laser in the near-IR.

The purpose of this work is to present and discuss spectroscopic properties of Yb³⁺ in K₂LaX₅ : (X= Cl, Br, I) hosts grown by the Bridgman method according to the procedure described in [2, 3]. The structural characterization was made for the obtained crystals.

Spectroscopic measurements useful for laser applications, high resolution absorption, emission spectra as well as decay time at 293 K, 77 K and 4 K were investigated. The interpretation of Stark levels were done by using Raman and IR absorption spectra to select electronic and vibronic lines. Upconversion process by non-radiative energy transfer to RE unexpected impurity ions as well as Yb³⁺ pairing and clustering are expected in these hosts.

[1] T.Y. Fan, IEEE J. Quantum Electron 29 (1993) 1457.

[2] G. Meyer, Th. Staffel, Z. anorg. Allg.Chem. 532 (1986) 31

[3] J. Legendziewicz, J. Cybinska, G. Meyer, Optical Materials, 24 (2003) 197

• Legal notice:
  

  Copyright (c) Pielaszek Research, all rights reserved.
  The above materials, including auxiliary resources, are subject to Publisher's copyright and the Author(s) intellectual rights. Without limiting Author(s) rights under respective Copyright Transfer Agreement, no part of the above documents may be reproduced without the express written permission of Pielaszek Research, the Publisher. Express permission from the Author(s) is required to use the above materials for academic purposes, such as lectures or scientific presentations.
  In every case, proper references including Author(s) name(s) and URL of this webpage: https://science24.com/paper/4159 must be provided.

1. Synthesis, characterization and optical properties of lutetium double phosphates doped by ytterbium ions
2. Luminescence behaviour BaTiO₃ nanocrystallites doped with RE-ions prepared by the sol-gel method