Self-absorption and radiation trapping in -doped -based glasses

M. Mattarelli; M. Montagna; L. Zampedri; A. Chiasera; M. Ferrari; G. C. Righini; L. M. Fortes; M. C. Gonçalves; L. F. Santos; R. M. Almeida

doi:10.1209/epl/i2005-10092-4

All issues

Volume 71 / No 3 (August 2005)

Europhys. Lett., 71 3 (2005) 394-399

Abstract

Issue		Europhys. Lett. Volume 71, Number 3, August 2005


Page(s)		394 - 399
Section		Electromagnetism, optics, acoustics, heat transfer, classical mechanics, and fluid dynamics
DOI		https://doi.org/10.1209/epl/i2005-10092-4
Published online		06 July 2005

Europhys. Lett., 71 (3), pp. 394-399 (2005)

Self-absorption and radiation trapping in $\chem{Er^{3+}}$ -doped $\chem{TeO_2}$ -based glasses

M. Mattarelli¹, M. Montagna¹, L. Zampedri¹, A. Chiasera², M. Ferrari², G. C. Righini³, L. M. Fortes⁴, M. C. Gonçalves⁴, L. F. Santos⁴ and R. M. Almeida⁴

¹ Dipartimento di Fisica, Università di Trento, GCSMFO Via Sommarive 14, I-38050 Povo, Trento, Italy
² IFN-CNR, Istituto di Fotonica e Nanotecnologie, GCSMFO Via Sommarive 14, I-38050 Povo, Trento, Italy
³ IFAC-CNR, Istituto di Fisica Applicata “Nello Carrara” Via Panciatichi 64, I-50127 Firenze, Italy
⁴ Departamento de Engenharia de Materiais, Instituto Superior Técnico A. Rovisco Pais, 1049-001 Lisboa, Portugal

Corresponding author: mattarel@science.unitn.it

Received: 13 January 2005
Accepted: 1 June 2005

Abstract

The 1.5 $\un{\mu m}$ fluorescence shape and lifetime of $\chem{{}Er^{3+}}$ -activated tellurite glasses have been investigated. The measures on bulk system have been compared with those obtained on powders, showing that the self-absorption effect broadens the emission spectrum and lengthens the lifetime. It has been demonstrated that the bandwidth and lifetime measurements depend on the absorption coefficient $\alpha(\lambda)$ and on the distance d between the focused exciting laser beam and the exit face of a bulk glass sample. The actual emission spectrum has been reconstructed from the $\alpha(\lambda)\!\cdot\!d$ knowledge. Lifetime lengthening cannot be determined from $\alpha(\lambda)\!\cdot\!d$ and, to obtain actual lifetime for highly $\chem{Er^{3+}}$ -doped glasses, measurements on powders are required.

PACS: 42.70.Hj – Laser materials / 78.55.-m – Photoluminescence, properties and materials / 78.40.-q – Absorption and reflection spectra: visible and ultraviolet

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.