Article ID Journal Published Year Pages File Type
9867880 Physics Letters A 2005 6 Pages PDF
Abstract
The upconversion properties of Er3+/Yb3+ codoped tellurite glasses and glass fibers with D-shape cladding under 980 nm excitation were investigated. Intense emission bands centered at 531, 546 and 658 nm corresponding to the transitions Er3+: H11/22→I15/24, S3/24→I15/24 and F9/24→I15/24, respectively, were observed at room temperature. Compared with that in Er3+/Yb3+ codoped tellurite bulk glass, the upconversion luminescence becomes more efficient in the fiber geometry. The dependence of upconversion intensities on fiber geometry and possible upconversion mechanism are discussed and evaluated. The presented Er3+/Yb3+ codoped tellurite fibers with intense upconversion luminescence can be used as potential host materials for upconversion fiber lasers.
Related Topics
Physical Sciences and Engineering Physics and Astronomy Physics and Astronomy (General)
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