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Optical evaluation of multichannel radiative transitions originating from 4G5/2 level of Sm3+ in heavy-metal-gallate glasses.
- Source :
- Journal of Applied Physics; Jul2010, Vol. 107 Issue 12, p123111, 6p, 4 Charts, 3 Graphs
- Publication Year :
- 2010
-
Abstract
- Conventional visible and novel infrared (IR) emissions of Sm<superscript>3+</superscript> in heavy-metal-gallate glasses (Li<subscript>2</subscript>O–K<subscript>2</subscript>O–BaO–PbO–Bi<subscript>2</subscript>O<subscript>3</subscript>–Ga<subscript>2</subscript>O<subscript>3</subscript>, LKBPBG for short) with low phonon energy have been observed. Judd–Ofelt parameters Ω<subscript>2</subscript> (3.00×10<superscript>-20</superscript> cm<superscript>2</superscript>), Ω<subscript>4</subscript> (5.19×10<superscript>-20</superscript> cm<superscript>2</superscript>), and Ω<subscript>6</subscript> (1.69×10<superscript>-20</superscript> cm<superscript>2</superscript>) 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 (σ<subscript>e</subscript>) were derived to be 1.35×10<superscript>-22</superscript>, 9.21×10<superscript>-22</superscript>, 9.58×10<superscript>-22</superscript>, and 3.91×10<superscript>-22</superscript> cm<superscript>2</superscript>, 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 σ<subscript>e</subscript> for this band was obtained to be 6.09×10<superscript>-23</superscript> cm<superscript>2</superscript>. The characterization of multichannel radiative transitions of Sm<superscript>3+</superscript> in LKBPBG glasses is beneficial in exposing its potential applications in visible and IR optoelectronic devices. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00218979
- Volume :
- 107
- Issue :
- 12
- Database :
- Complementary Index
- Journal :
- Journal of Applied Physics
- Publication Type :
- Academic Journal
- Accession number :
- 51848793
- Full Text :
- https://doi.org/10.1063/1.3448238