Energy transfer process for the glue up-conversion in calcium aluminate glasses doped with Tm3+ and Nd3+
SCIE
SCOPUS
- Title
- Energy transfer process for the glue up-conversion in calcium aluminate glasses doped with Tm3+ and Nd3+
- Authors
- Chung, WJ; Heo, J
- Date Issued
- 2001-02
- Publisher
- AMER CERAMIC SOC
- Abstract
- Excitation of Tm3+ to H-3(4) using the 791 mm pump source showed the frequency up-converted blue emission (similar to 480 nm) due to the Tm3+:(1)G(4) --> H-3(6) transition in Tm3+/Nd3+ codoped CaO . Al2O3 glasses. Intensity and Lifetime changes with rare-earth concentrations suggested the efficient energy transfer of Tm3+:H-3(4) --> Nd3+:F-4(5/2) and Nd3+:F-4(3/2) --> Tm3+:(1)G(4). The latter transfer enabled Tm3+ to reach its (1)G(4) level, and the blue emission became possible through the (1)G(4) --> H-3(6) transition. Quantitative analysis with rate equations proved that these two transitions were the most efficient among all the possible energy transfer routes between Tm3+ and Nd3+. Calculated up-conversion efficiency of the Tm3+/Nd3+ combination in CaO . Al2O3, glass was 6.6 x 10(-3), and it was similar to4 orders of magnitude larger than those reported for other oxide glasses.
- Keywords
- THORIUM FLUORIDE GLASS; EFFICIENT FREQUENCY UPCONVERSION; BLUE UPCONVERSIONS; TM-3+ IONS; MECHANISMS; ER-3+; YB
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/19674
- ISSN
- 0002-7820
- Article Type
- Article
- Citation
- JOURNAL OF THE AMERICAN CERAMIC SOCIETY, vol. 84, no. 2, page. 348 - 352, 2001-02
- Files in This Item:
- There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.