Fibers 2013, 1(3), 101-109; doi:10.3390/fib1030101
Article

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; in revised form: 28 November 2013 / Accepted: 4 December 2013 / Published: 10 December 2013
(This article belongs to the Special Issue Advances on Optical Fibers)
PDF Full-text Download PDF Full-Text [300 KB, uploaded 10 December 2013 14:06 CET]
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.
Keywords: photodarkening; Yb-doped fibers; high power lasers

Article Statistics

Load and display the download statistics.

Citations to this Article

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.

AMA Style

Gebavi H, Milanese D, Taccheo S, Mechin D, Monteville A, Freyria FS, Bonelli B, Robin T. Photodarkening of Infrared Irradiated Yb3+-Doped Alumino-Silicate Glasses: Effect on UV Absorption Bands and Fluorescence Spectra. Fibers. 2013; 1(3):101-109.

Chicago/Turabian Style

Gebavi, Hrvoje; Milanese, Daniel; Taccheo, Stefano; Mechin, David; Monteville, Achille; Freyria, Francesca S.; Bonelli, Barbara; Robin, Thierry. 2013. "Photodarkening of Infrared Irradiated Yb3+-Doped Alumino-Silicate Glasses: Effect on UV Absorption Bands and Fluorescence Spectra." Fibers 1, no. 3: 101-109.

Fibers EISSN 2079-6439 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert