Effect of Al(PO3)3 content on physical, chemical and optical properties of fluorophosphate glasses for 2μm application

Wang, Meng; Yi, Lixia; Chen, Youkuo; Chen, Yu; Wang, Guonian; Hu, Lili; Zhang, Junjie

doi:10.1016/j.matchemphys.2008.09.014

Cited by 53 publications

(15 citation statements)

References 27 publications

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“…It can be seen that X 2 of BGN glass is larger than germanium [16,17], fluorophosphate [18] and ZBLAN [19] glasses but smaller than phosphate [16,17] and tellurite [17,20] glasses. It indicates that ligand asymmetry in Tm 3+ -doped BGN glass is weaker than those in phosphate and tellurium glasses.…”

Section: à8mentioning

confidence: 93%

“…(10) and (11), the values of the peak absorption and emission cross-sections for BGN-1-6 samples decrease gradually with increasing Tm 3+ concentration. [18], tellurite [26] and germanate glasses [27], but is smaller than phosphate [28], ZBLAN [19,29] glasses, and oxyfluoride glass-ceramics [30]. The large value of r e Â s R indicates that the BGN glass is promising material for optical amplification.…”

Section: Absorption and Stimulated Emission Cross-sectionmentioning

confidence: 99%

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Tm3+ doped Bi2O3–GeO2–Na2O glasses for 1.8μm fluorescence

et al. 2010

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Section: à8mentioning

confidence: 93%

Section: Absorption and Stimulated Emission Cross-sectionmentioning

confidence: 99%

Tm3+ doped Bi2O3–GeO2–Na2O glasses for 1.8μm fluorescence

et al. 2010

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“…The value of Ω 2 drops with the improved symmetry [24]. The larger Ω 2 of Ho 3+ in our Ho 3+ /Yb 3+ co-doped PbF 2 crystal indicates that a lower symmetry surrounding Ho 3+ ions is caused by the introduction of Yb 3+ ions [25]. Further calculation about the fluorescence branching ratio β of 5 I 6 → 5 I 7 transition in the Ho 3+ /Yb 3+ :PbF 2 crystal is as high as 20.52%, which is comparable with the result of Ho 3+ single doped PbF 2 crystal (20.99%), and still much higher than that of other crystals, indicating that the codoping of Yb 3+ ions has little influence on the ∼3 µm fluorescence emission efficiency of Ho 3+ .…”

Section: Resultsmentioning

confidence: 72%

Enhanced emission of 286 μm from diode-pumped Ho^3+/Yb^3+-codoped PbF_2 crystal

Zhang

Hong

et al. 2015

Opt. Express

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A novel Ho(3+)Yb(3+)-codoped PbF(2) mid-IR laser crystal was successfully grown and analyzed. Enhanced emission at 2.86 μm was observed from the crystal under excitation of a common 970 nm laser diode for the first time. The effect of Yb(3+) codoping on the 2.86 μm photoluminescence of Ho(3+) was investigated. In comparison to Ho(3+)-singly doped PbF(2) crystal, the Ho(3+)/Yb(3+)-codoped PbF(2) crystal possessed comparable quantum efficiency (88.8%), and fluorescence branching ratio (20.52%) along with a larger calculated emission cross section (1.90×10(-20) cm(2)) corresponding to the laser transition (5)I(6)→(5)I(7) of Ho(3+). It was found that the introduced Yb(3+) enhanced the 2.86 μm emission by depopulating the Ho(3+):(5)I(7) level. The energy transfer (ET) efficiency from Yb(3+):(2)F(5/2) to Ho(3+):(5)I(6) is as high as 96.7%, indicating that Yb(3+) ion is an effective sensitizer for Ho(3+) ion in PbF(2) crystal. These results suggest that Ho(3+)/Yb(3+)-codoped PbF(2) crystal may become an attractive host for developing solid state lasers at around 2.86 μm under a conventional 970 nm LD pump.

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“…However, in this paper, strong 2 μm emission is achieved from Yb-Ho doped fluorophosphate glasses which collect the merits of fluoride and phosphate glasses. In our recent research [8], we have suggested that the physical and chemical properties of fluorophosphate glasses compare well against fluoride glasses, and the optical properties excel phosphate glasses. Meanwhile, they possess the advantages of high content of doped rare earth ions, extensive compositions and high emission cross section [9].…”

Section: Introductionmentioning

confidence: 99%