Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5007535 | Optics & Laser Technology | 2017 | 6 Pages |
Abstract
The mid-infrared emission of low phonon (963 cmâ1) lead silicate glass system with Ho3+/Tm3+ co-doped has been investigated. Luminescence at â¼2.1 μm corresponding to 5I7 â 5I8 transition in holmium was obtained by energy transfer between Tm3+ and Ho3+ ions. Energy transfer mechanism between them was analyzed. And the highest value of the luminescence intensity was obtained in glass co-doped with 1Tm2O3/0.3Ho2O3. The full width at half maximum of the (Ho3+/Tm3+) emission reached to 350 nm in 1Tm2O3/0.1Ho2O3 sample. Absorption and emission cross section have also been calculated and analyzed. The maximum emission cross section was 3.9 Ã 10â21 cm2 around 2.0 μm. And when P > 0.4, a positive gain can be obtained at wavelengths >1941 nm. Results demonstrated that the prepared Ho3+/Tm3+ co-doped lead silicate glasses have excellent spectroscopic properties in mid-infrared wavelengths and can obtain high gain in fiber lasers.
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Authors
Ning Wang, Ruijie Cao, Muzhi Cai, Lingling Shen, Ying Tian, Feifei Huang, Shiqing Xu, Junjie Zhang,