Next Article in Journal / Special Issue
The Development of Advanced Optical Fibers for Long-Wave Infrared Transmission
Previous Article in Journal / Special Issue
Characteristics and Laser Performance of Yb3+-Doped Silica Large Mode Area Fibers Prepared by Sol–Gel Method
Article Menu

Export Article

Open AccessArticle
Fibers 2013, 1(3), 101-109; https://doi.org/10.3390/fib1030101

Photodarkening of Infrared Irradiated Yb3+-Doped Alumino-Silicate Glasses: Effect on UV Absorption Bands and Fluorescence Spectra

1
College of Engineering, Swansea University, Singleton Park, Swansea SA2 8PP, UK
2
Dipartimento di Scienza Applicata e Tecnologia (DISAT), Politecnico di Torino, Corso Duca degli Abruzzi 24, Torino 10129, Italy
3
Perfos, R&D Platform of Photonics Bretagne, 11 rue Louis de Broglie, Lannion F-22300, France
4
XFiber S.A.S., Rue Paul Sabatier, Lannion F-22300, France
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Received: 30 October 2013 / Revised: 28 November 2013 / Accepted: 4 December 2013 / Published: 10 December 2013
(This article belongs to the Special Issue Advances on Optical Fibers)
View Full-Text   |   Download PDF [300 KB, uploaded 10 December 2013]   |  

Abstract

The photodarkening phenomenon in alumino-silicate glass preforms, doped with different ytterbium concentrations, was studied. The UV band, comprised between 180 and 350 nm, was examined before and after irradiation at 976 nm. The non-linear dependence of 240 nm band with concentration after infra-red irradiation was demonstrated and ascribed predominantly to Yb3+ pair’s interaction. The emission spectrum after the excitation in UV spectral region showed increased intensity after photodarkening, probably due to Yb2+ ions creation. Phenomenological photodarkening model and the possible existence of several defect types are presented. View Full-Text
Keywords: photodarkening; Yb-doped fibers; high power lasers photodarkening; Yb-doped fibers; high power lasers
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Gebavi, H.; Milanese, D.; Taccheo, S.; Mechin, D.; Monteville, A.; Freyria, F.S.; Bonelli, B.; Robin, T. Photodarkening of Infrared Irradiated Yb3+-Doped Alumino-Silicate Glasses: Effect on UV Absorption Bands and Fluorescence Spectra. Fibers 2013, 1, 101-109.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Fibers EISSN 2079-6439 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top