| Autor: |
Liu XK, He MZ, Fang QN, Chen YC, Chen GZ, Li SM, Zhao CC, Hang Y |
| Jazyk: |
angličtina |
| Zdroj: |
Optics letters [Opt Lett] 2024 Dec 15; Vol. 49 (24), pp. 7036-7039. |
| DOI: |
10.1364/OL.546230 |
| Abstrakt: |
To the best of our knowledge, this is the first study to investigate the use of Tm 3+ to sensitize the Dy 3+ ion and enhance the ∼4.3 µm emission from Dy 3+ : 6 H 11/2 → 6 H 13/2 in the KPb 2 Br 5 (KPB) crystal. The ∼4.3 µm fluorescence emission properties and energy transfer mechanism of the Dy:KPB and Tm,Dy:KPB crystals were examined. The results show that Tm 3+ is an excellent sensitizer to the Dy 3+ ion and can provide an efficient excitation channel; thus, the Tm,Dy:KPB crystal can be pumped by a commercial 808 nm laser diode (LD). Compared with the Dy:KPB crystal, co-doping with the Tm 3+ ion improves the absorption around 800 nm by an order of magnitude, and the energy transfer efficiency from Tm 3+ : 3 F 4 to Dy 3+ : 6 H 11/2 is as high as 76.7%, indicating that the Tm,Dy:KPB crystal has great potential application in ∼4.3 µm mid-infrared lasers under a commercial LD pump. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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