World Library  

Add to Book Shelf
Flag as Inappropriate
Email this Book

Applied Physics Letters : Multilevel sensitization of Er3+ in low-temperature-annealed silicon-rich SiO2

By Oleksandr Savchyn, Ravi M. Todi, Kevin R. Coffey, and Pieter G. Kik

Click here to view

Book Id: WPLBN0002169248
Format Type: PDF eBook :
File Size: Serial Publication
Reproduction Date: 12 December 2008

Title: Applied Physics Letters : Multilevel sensitization of Er3+ in low-temperature-annealed silicon-rich SiO2  
Author: Oleksandr Savchyn, Ravi M. Todi, Kevin R. Coffey, and Pieter G. Kik
Volume: Issue : December 2008
Language: English
Subject: Science, Physics, Natural Science
Collections: Periodicals: Journal and Magazine Collection, Applied Physics Letters Collection
Historic
Publication Date:
Publisher: American Institute of Physics

Citation

APA MLA Chicago

Ravi M. Todi, Kevin R. Coffey, And Pieter G. Ki, O. S. (n.d.). Applied Physics Letters : Multilevel sensitization of Er3+ in low-temperature-annealed silicon-rich SiO2. Retrieved from http://www.worldjournal.org/


Description
Description: The dynamics of Er3+ excitation in low-temperature-annealed Si-rich SiO2 are studied. It is demonstrated that Si-excess-related indirect excitation is fast (transfer time τtr<27 ns) and occurs into higher lying Er3+ levels as well as directly into the first excited state (4I13/2). By monitoring the time-dependent Er3+ emission at 1535 nm, the multilevel nature of the Er3+ sensitization is shown to result in two types of excitation of the 4I13/2 state: a fast excitation process (τtr<27 ns) directly into the 4I13/2 level and a slow excitation process due to fast excitation into Er3+ levels above the 4I13/2 level, followed by internal Er3+ relaxation with a time constant τ32>2.3 μs. The fast and slow excitations of the 4I13/2 level account for an approximately equal fraction of the excitation events: 45%–50% and 50%–55%, respectively.

 
 


Copyright © World Library Foundation. All rights reserved. eBooks from World Journals, Database of Academic Research Journals are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.