Optical evaluation of multichannel radiative transitions originating from 4G5/2 level of Sm3+ in heavy-metal-gallate glasses

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

24 Scopus Citations
View graph of relations


Related Research Unit(s)


Original languageEnglish
Article number123111
Journal / PublicationJournal of Applied Physics
Issue number12
Publication statusPublished - 15 Jun 2010


Conventional visible and novel infrared (IR) emissions of Sm3+ in heavy-metal-gallate glasses (Li2O-K2O-BaO-PbO-Bi 2O3-Ga2O3, LKBPBG for short) with low phonon energy have been observed. Judd-Ofelt parameters ω2 (3.00 × 10-20 cm2), ω4 (5.19 × 10-20 cm2), and ω6 (1.69 × 10-20 cm2) indicate a higher asymmetry and stronger covalent environment in the optical glasses. For the visible fluorescence bands peaked at 564, 601, 648, and 710 nm, the maximum stimulated emission cross-sections (σe) were derived to be 1.35 × 10 -22, 9.21 × 10-22, 9.58 × 10-22, and 3.91 × 10-22 cm2, respectively, the values are larger than those in phosphate, oxyfluoroborate, tellurite, and calibo glasses obviously. The observed 1185 nm IR emission lies in the low-loss window of telecommunication system, and the maximum value of σe for this band was obtained to be 6.09 × 10-23 cm2. The characterization of multichannel radiative transitions of Sm3+ in LKBPBG glasses is beneficial in exposing its potential applications in visible and IR optoelectronic devices. © 2010 American Institute of Physics.