Spectroscopic characterisation of the upconversion avalanche mechanism in Pr3+, Yb3+: BaY2F8

Year: 2003

Authors: Osiac E., Kück S., Heumann E., Huber G., Sani E., Toncelli A., Tonelli M.

Autors Affiliation: Institut für Laser-Physik, Luruper Chaussee 149, Geb. 64, 22761 Hamburg, Germany; Institute of Atomic Physics, P.O. Box MG-6, 76900 Bucharest, Romania; Phys.-Technische Bundesanstalt, Section 4.11, Bundesallee 100, 38116 Braunschweig, Germany; NEST-INFM, Dipartimento di Fisica, Universita

Abstract: The paper presents the spectroscopic investigation of Pr3+,Yb3+:BaY2F8 and the characteristics of the upconverted emission from the (3)p(0) level due to an avalanche mechanism under infrared excitation around 820 and 870 nm. Absorption and emission measurements at 12 K were performed in order to refine the Stark level scheme. Room temperature absorption.. emission, excitation spectra, and excited state absorption measurements were performed and analysed in order to investigate the properties of the avalanche mechanism and to determine the spectroscopic parameters of this system. Based on the determined spectroscopic parameters a system of differential equations was established in order to describe the observed avalanche mechanism. (C) 2003 Elsevier B.V. All rights reserved.

Journal/Review: OPTICAL MATERIALS

Volume: 24 (3)      Pages from: 537  to: 545

More Information: This study was supported by the German DFG Project: HU435/3-3 and KU11458/4-1 in collaboration with DFG Graduiertenkolleg no. 463 at the University of Hamburg. The authors wish to thank Ilaria Grassini and Francesca Traverso for their skill and competence in growing and preparing the samples.
KeyWords: Absorption; Barium compounds; Differential equations; Particulate emissions; Praseodymium; Spectroscopy; Ytterbium, Avalanche mechanism, Crystals
DOI: 10.1016/S0925-3467(03)00089-2

ImpactFactor: 1.623
Citations: 27
data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2024-11-10
References taken from IsiWeb of Knowledge: (subscribers only)

Connecting to view paper tab on IsiWeb: Click here
Connecting to view citations from IsiWeb: Click here