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Broadband near-infrared luminescence and tunable optical amplification around 1.55μm and 1.33μm of PbS quantum dots in glasses
- Source :
-
Journal of Alloys & Compounds . Sep2011, Vol. 509 Issue 38, p9335-9339. 5p. - Publication Year :
- 2011
-
Abstract
- Abstract: Silicate glasses containing PbS quantum dots (QDs) with narrow size distribution were prepared through heat treatment. Transmission electron microscopy (TEM) results show that spherical PbS QDs are densely dispersed in the glassy matrix. Using ZnS–PbO to replace PbS as precursor of PbS QDs, the size distribution of PbS QDs in glasses becomes more uniform. Tunable infrared luminescence from 1100 to 2200nm has been obtained by controlling the glassy matrix and preparation parameters. Obvious optical amplification at communication windows of 1.55μm and 1.33μm is probed, and the PbS QDs doped glasses using ZnS–PbO as precursor exhibit larger optical amplification. The PbS QDs doped glasses with intense optical amplification are considered to be promising candidate as gain medium for broadband fiber amplifier and tunable fiber laser. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 09258388
- Volume :
- 509
- Issue :
- 38
- Database :
- Academic Search Index
- Journal :
- Journal of Alloys & Compounds
- Publication Type :
- Academic Journal
- Accession number :
- 64482534
- Full Text :
- https://doi.org/10.1016/j.jallcom.2011.07.030