Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Temperature-dependent photoluminescence spectra of Er-Tm codoped calcium boroaluminate glasses

Not Accessible

Your library or personal account may give you access

Abstract

The temperature dependence of photoluminescence (PL) spectra of Er-Tm codoped calcium boroaluminate (CABAL) glasses with different dopant concentrations was investigated under 15–298 K, by pumping at 795 nm. The intensities of three band emissions located at 1.46, 1.53, and 1.80 μm decreased monotonically when increasing the temperature from at lower concentrations. However, the emissions peaked at 1.80 μm increase with the increasing temperature at higher concentrations. This was attributed to the increasing of cross relaxation (CR) resulting from the high doping concentration of Tm ions. This was evidenced by the much shorter fluorescence lifetime of 56 μs for the F34 emission due to F34H36 transition for the CABAL glass codoped with 2.00 mol.% Tm2O3, in comparison with 185 μs for that of 0.2 mol.% Tm2O3. The energy transfer (ET) and CR processes between Er3+ and Tm3+ ions have been discussed at different doping concentrations and operating temperatures. The nonexponential character of the decays of I413/2 and H34 with the increasing concentration indicated the occurring of a dipole-dipole quenching processes in the framework of a diffusion-limited regime. The average critical distances of CR between Tm3+ ions and ET between Er3+ and Tm3+ ions were approximately 1 nm.

©2012 Optical Society of America

Full Article  |  PDF Article
More Like This
Study of broadband near-infrared emission in Tm3+-Er3+ codoped TeO2-WO3-PbO glasses

R. Balda, J. Fernández, and J.M. Fernández-Navarro
Opt. Express 17(11) 8781-8788 (2009)

Superbroadband near-infrared emission and energy transfer in Pr3+-Er3+ codoped fluorotellurite glasses

Bo Zhou, Lili Tao, Yuen H. Tsang, Wei Jin, and Edwin Yue-Bun Pun
Opt. Express 20(11) 12205-12211 (2012)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (7)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (2)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (5)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved