Spectroscopic properties of the 1.4 μm emission of Tm^3+ ions in TeO_2-WO_3-PbO glasses

Abstract

In this work, we report the spectroscopic properties of the infrared 3H4-->3F4 emission of Tm3+ ions in two different compositions of glasses based on TeO2, WO3, and PbO for three Tm2O3 concentrations (0.1,0.5, and 1 wt%). Judd-Ofelt intensity parameters have been determined and used to calculate the radiative transition probabilities and radiative lifetimes. The infrared emission at around 1490 nm corresponding to the 3H4-->F4 transition has two noticeable features if compared to fluoride glasses used for S-band amplifiers. On one hand, it is broader by nearly 30 nm, and on the other, the stimulated emission cross section is twice the value for fluoride glasses. Both the relative intensity ratio of the 1490 nm emission to 1820 nm and the measured lifetime of the 3H4 level decrease as concentration increases, due to the existence of energy transfer via cross-relaxation among Tm3+ ions. The analysis of the decays from the 3H4 level with increasing concentration indicates the presence of a dipole-dipole quenching process assisted by energy migration.

Optical absorption and fluorescence properties of Tm3+-doped K–Mg–Al phosphate glasses for laser applications

“…2. The band positions in this spectrum are similar to those reported in earlier papers [1,2,4,5,16] except minor variations in their relative positions, broadening and intensities due to changes of chemical environment around the Tm 3+ ion. The observed energy levels obtained from the absorption spectra have been analyzed using the free-ion Hamiltonian model as explained in our earlier [24].…”

“…The estimated uncertainties of the JO parameters shown in Table 2 were found to be larger than those estimated for Er 3+ :oxyfluoride glass [34] but smaller than those found for Er 3+ :LiNbO 3 crystal [35]. As can be seen from Table 2, it is observed that the trend of JO parameters (˝2 >˝4 >˝6) is found to be same for phosphate [1], germanate [2], PKBAT [16], fluorophosphate [27], borate [28], tellurite [29], ZBLAN [30], ZBLALi [31], indium-fluoride [31], CaBaMg aluminate [32] and fluoro-indate [33] glasses. The trend of˝2 >˝6 >˝4 is noted for PKMAT similar that of oxyfluoroborate [11] glasses and the trend of˝6 >˝2 >˝4 was observed for tellurite [12] glass.…”

“…In recent years, advancements in Tm 3+ -doped materials for telecommunication devices have been used to expand the transmission bandwidth of optical fibers beyond the range available from Er 3+ -doped fiber amplifiers (C-band), by taking advantage of the 1.4 m emission wavelength of Tm 3+ ion [1,2]. In addition to the 1.4 m emission band, a number of studies have also been carried out to develop the 1.8 and 2.0 m emission band of Tm 3+ ion, which are of potential interest for eye-safe LIDAR, remote sensing and medical laser applications [3,4].…”

Multicolor upconversion luminescence from RE3+-Yb3+ (RE=Er, Tm, Tb) codoped LaAlGe2O7 glasses

“…Compared with the RE 3+ doped LAG phosphors, the RE 3+ -Yb 3+ codoped LAG glasses also show comparable color purities. The high transparency and efficient UC in doped LAG glasses also show great potential applications in visible lasers and 3D displays [30].…”

Desenvolvimento de materiais nanoestruturados à base de óxido de nióbio para aplicação em fotônica

“…In the specific case of optical amplifiers for telecommunication application, it could be concluded that the most adequate properties were observed on the (DESURVIRE et al, 1987;MEARS et al, 1987 VAN DER ENDE et al, 2009;LAHOZ et al, 2011), telas (MACIEL et al, 2000GOUVEIA-NETO et al, 2008;CAO et al, 2012) e marcadores biológicos (VETRONE et al, 2009;BOGDAN et al, 2011;HAASE e SCHÄFER, 2011) (BALDA et al, 2008;SIMPSON, 2008;XIE et al, 2011;LI et al, 2012 PANDOZZI et al, 2005;WATEKAR et al, 2005;SIMPSON et al, 2008;XIE et al, 2011). Na literatura também são reportadas as codopagens de íons Tm 3+ e Er 3+ em matrizes com baixa energia de fônon tais como vidros teluritos, germanatos, oxifluoretos entre outras, a fim de se obter um alargamento de banda (MATTARELLI et al, 2005;TIKHOMIROV et al, 2008;MONTEIRO et al, 2013 (RIGHINI et al, 2002;ZAMPEDRI et al, 2003;ALMEIDA et al, 2004;ALMEIDA et al, 2005 também tem sido reportados na literatura (GONCALVES et al, 2002;GONÇALVES et al, 2004;ZAMPEDRI et al, 2004;BERNESCHI et al, 2011).…”