Absorption and mid-infrared emission spectroscopy of Dy3+ in Ge-As(or Ga)-S glasses
SCIE
SCOPUS
- Title
- Absorption and mid-infrared emission spectroscopy of Dy3+ in Ge-As(or Ga)-S glasses
- Authors
- Heo, J; Shin, YB
- Date Issued
- 1996-03
- Publisher
- ELSEVIER SCIENCE BV
- Abstract
- Ge-As-S and Ge-Ga-S glasses doped with Dy3+ were prepared and the emission characteristics of four infrared fluorescent emissions al 1.33, 1.75, 2.90 and 4.38 mu m were evaluated. High oscillator strengths and large intensity parameters of Dy3+ originate from the highly covalent nature of the bonds in the glasses, Measured lifetimes in the Ge-As-S glass are 728 and 4550 mu s for the H-6(11/2) --> H-6(15/2) (1.75 mu m) and H-6(13/2) --> H-6(15/2) (2.90 mu m) transitions, respectively. Quantum efficiencies of 32.8 an 87.2% of the above transitions compare well with the values reported previously. Multiphonon relaxation rates in Ge-As-S and Ge-Ga-S glasses are similar to 4 orders of magnitude less than those in silicate glasses, which provide good opportunities for future laser applications.
- Keywords
- OPTICAL-PROPERTIES
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/21585
- DOI
- 10.1016/0022-3093(95)00579-X
- ISSN
- 0022-3093
- Article Type
- Article
- Citation
- JOURNAL OF NON-CRYSTALLINE SOLIDS, vol. 196, page. 162 - 167, 1996-03
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