Influences of the Dopants of Several Heavy Metal Oxides and GeO2 on Spectroscopic and Lasing Properties of Yb3+-doped Fluorophosphate Glasses

doi:10.15541/jim20130660

Abstract

Abstract:

Effects of the different metal oxides added with Ga₂O₅, TeO₂, GeO₂, WO₃, Nb₂O₅ and Bi₂O₅respectively on the spectroscopic and lasing properties of Yb³⁺-doped fluorophosphate glasses were comparatively investigated. Results show that the additions of TeO₂, GeO₂ and Ga₂O₅ can increase the absorption and emission cross sections of Yb³⁺-ions. Among the three glasses above, the TeO₂-doped glass has the largest parameters up to 1.95 pm²and 0.85 pm², respectively. Meanwhile, the dopants of Ga₂O₅, Nb₂O₅and GeO₂ are beneficial to the improvement of lasing properties in fluorophosphate glasses. Laser parameters (SFL) of fluorophosphate glass doped with Ga₂O₅ is 1.237, the largest of all the glasses. Moreover, serious fluorescence trapping of Yb³⁺ is found in fluorophosphate glasses doped with TeO₂and GeO₂, respectively, which strongly lessens the lasing properties.

Key words: fluorophosphate glasses, metal oxides, absorption cross section, emission cross section, lasing property

CLC Number:

TQ174

YANG Bin-Hua, LIU Xue-Qiang, ZHANG Wei, LI Xiang-Tan, ZHANG Li-Yan, HU Li-Li. Influences of the Dopants of Several Heavy Metal Oxides and GeO₂ on Spectroscopic and Lasing Properties of Yb³⁺-doped Fluorophosphate Glasses[J]. Journal of Inorganic Materials, 2014, 29(9): 961-966.

Figures/Tables 7

References 17

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Glass	Composition / mol%
FP-N	23Al(PO₃)₃-10MgF₂-10CaF₂-17SrF₂-35BaF₂-5AlF₃-1YbF₃
FP-Ge	95[23Al(PO₃)₃-10MgF₂-10CaF₂-17SrF₂-35BaF₂-5AlF₃]- 5GeO₂-1YbF₃
FP-Te	95[23Al(PO₃)₃-10MgF₂-10CaF₂-17SrF₂-35BaF₂-5AlF₃]- 5TeO₂-1YbF₃
FP-Bi	95[23Al(PO₃)₃-10MgF₂-10CaF₂-17SrF₂-35BaF₂-5AlF₃]- 5Bi₂O₃-1YbF₃
FP-W	95[23Al(PO₃)₃-10MgF₂-10CaF₂-17SrF₂-35BaF₂-5AlF₃]- 5WO₃-1YbF₃
FP-Ga	95[23Al(PO₃)₃-10MgF₂-10CaF₂-17SrF₂-35BaF₂-5AlF₃]- 5Ga₂O₃-1YbF₃
FP-Nb	95[23Al(PO₃)₃-10MgF₂-10CaF₂-17SrF₂-35BaF₂-5AlF₃]- 5Nb₂O₅-1YbF₃

Glass	Composition / mol%
FP-N	23Al(PO₃)₃-10MgF₂-10CaF₂-17SrF₂-35BaF₂-5AlF₃-1YbF₃
FP-Ge	95[23Al(PO₃)₃-10MgF₂-10CaF₂-17SrF₂-35BaF₂-5AlF₃]- 5GeO₂-1YbF₃
FP-Te	95[23Al(PO₃)₃-10MgF₂-10CaF₂-17SrF₂-35BaF₂-5AlF₃]- 5TeO₂-1YbF₃
FP-Bi	95[23Al(PO₃)₃-10MgF₂-10CaF₂-17SrF₂-35BaF₂-5AlF₃]- 5Bi₂O₃-1YbF₃
FP-W	95[23Al(PO₃)₃-10MgF₂-10CaF₂-17SrF₂-35BaF₂-5AlF₃]- 5WO₃-1YbF₃
FP-Ga	95[23Al(PO₃)₃-10MgF₂-10CaF₂-17SrF₂-35BaF₂-5AlF₃]- 5Ga₂O₃-1YbF₃
FP-Nb	95[23Al(PO₃)₃-10MgF₂-10CaF₂-17SrF₂-35BaF₂-5AlF₃]- 5Nb₂O₅-1YbF₃

Glass	Density/ (g•cm^-3)	n_d	Yb³⁺concentration/ (10²⁰ions•cm^-3)
FP-N	3.811	1.541	1.400
FP-Ge	3.813	1.546	1.426
FP-Te	3.807	1.544	1.400
FP-Bi	4.081	1.578	1.372
FP-W	3.909	1.553	1.406
FP-Ga	3.842	1.543	1.400
FP-Nb	3.811	1.566	1.357

Glass	Density/ (g•cm^-3)	n_d	Yb³⁺concentration/ (10²⁰ions•cm^-3)
FP-N	3.811	1.541	1.400
FP-Ge	3.813	1.546	1.426
FP-Te	3.807	1.544	1.400
FP-Bi	4.081	1.578	1.372
FP-W	3.909	1.553	1.406
FP-Ga	3.842	1.543	1.400
FP-Nb	3.811	1.566	1.357

Glass	Σ_abs (pm²•nm)	A_rad /s^-1	Δλ_eff /nm	τ_f·σ_emi /(pm²•ms)	I_sat /( kW•cm^-2)	β_min	I_min /( kW•cm^-2)	SFL
FP-N	36.011	947	45.708	0.886	9.801	0.17	1.703	0.520
FP-Ge	47.102	1247	49.172	1.227	7.521	0.15	1.147	1.070
FP-Te	49.178	1298	55.674	1.298	6.961	0.18	1.258	1.032
FP-Bi	39.651	1093	46.775	0.985	9.227	0.16	1.471	0.669
FP-W	42.205	1127	50.853	1.109	8.006	0.16	1.280	0.867
FP-Ga	44.629	1177	46.502	1.155	7.904	0.12	0.934	1.237
FP-Nb	41.924	1138	49.776	1.047	8.452	0.12	1.189	1.072

Influences of the Dopants of Several Heavy Metal Oxides and GeO₂ on Spectroscopic and Lasing Properties of Yb³⁺-doped Fluorophosphate Glasses

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Glass	λ_s/nm	λ_p/nm	I_λ_s/ I_λ_p	τ_rad/ms	τ_f/ms	(τ_f-τ_rad)/τ_rad
FP-N	1002	976	0.582	1.056	1.433	0.36
FP-Ge	1005	976	0.634	0.802	1.463	0.82
FP-Te	1003	976	0.713	0.770	1.499	0.95
FP-Bi	1004	976	0.590	0.915	1.405	0.54
FP-W	1004	976	0.647	0.887	1.507	0.70
FP-Ga	1005	976	0.581	0.85	1.460	0.72
FP-Nb	1004	976	0.619	0.878	1.464	0.67

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