Paper Title:
Structural and Spectroscopic Assessment of Er3+-Activated SiO2-HfO2 Glass Ceramics Planar Waveguides
  Abstract

Two series of xHfO2 - (100-x) SiO2 (x=10, 20, 30 mol%) glass-ceramics planar waveguides doped with 0.3 mol% Er3+ ions were prepared by the sol-gel route. A thermal treatment at 1000°C was applied to the second series of samples to nucleate HfO2 crystals. The waveguides were analyzed by X-ray photoelectron spectroscopy to study the effect of the Hf concentration and of the annealing on the material structure. XPS shows that in the first series of samples a Hf concentration threshold exists. Above this threshold the material undergoes a spinodal decomposition with formation of HfO2 rich domains. In the second series of samples the presence of thermal treatment lowers the concentration threshold so that the phase separation occurs also at a Hf concentration of 10%mol. In the waveguides where spinodal decomposition in present, the emission spectra from the Er3+ ions reveal a sensible narrowing of the 4I13/2 → 4I15/2 line. This demonstrates the presence of a crystalline environment for the Er3+ ions since the inhomogeneous broadening due to the disordered glassy network is suppressed. These results may have important implications for the fabrication of photonic devices with increased efficiency.

  Info
Periodical
Main Theme
Edited by
Pietro VINCENZINI and Giancarlo RIGHINI
Pages
56-61
DOI
10.4028/www.scientific.net/AST.55.56
Citation
L. Minati, G. Speranza, Y. Jestin, C. Armellini, A. Chiappini, A. Chiasera, M. Ferrari, G.C. Righini, "Structural and Spectroscopic Assessment of Er3+-Activated SiO2-HfO2 Glass Ceramics Planar Waveguides", Advances in Science and Technology, Vol. 55, pp. 56-61, 2008
Online since
September 2008
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Mathias Kappa, Markus Ratzke, Jürgen Reif
Abstract:Hafnium oxide films were prepared by Pulsed Laser Deposition (PLD). The influence of laser wavelength (fundamental, second and third harmonic...
723
Authors: Annamaria Votta, Enrico Bellandi, Rosella Piagge, Massimo Caniatti, Francesco Pipia, Mauro Alessandri
63
Authors: Gualtiero Nunzi Conti, S. Soria, Simone Berneschi, M. Brenci, F. Cosi, Stefano Pelli, Cristina Armellini, Andrea Chiappini, A. Chiasera, Yoann Jestin, Maurizio Ferrari, Enrico Moser, L. Ghisa, S. Trebaol, Y. Dumeige, P. Féron, G.C. Righini
Abstract:We report experimental results obtained in our laboratories in the development of Er3+- doped glass microspherical cavities for the...
46
Authors: Simone Berneschi, Guillaume Alombert-Goget, Cristina Armellini, B.N.S. Bhaktha, Massimo Brenci, Andrea Chiappini, A. Chiasera, Maurizio Ferrari, Sriram Guddala, Enrico Moser, Gualtiero Nunzi Conti, Stefano Pelli, G.C. Righini, Sylvia Turrell
Abstract:The possibility to confine the light in optical planar structures represented the milestone for the development of integrated optical...
6
Authors: Dai Shou, Ding Shan Ruan, Feng Hou
Chapter 2: Engineering Ceramics and Ceramic Composites
Abstract:In this paper, Hf element was introduced into the Si-O-C network by the sol-gel method using the dimethyldiethoxysiloxane (DMDES,...
912