Thermal and luminescent properties of 2 μm emission in thulium-sensitized holmium-doped silicate-germanate glass

Rong Chen; Ying Tian; Bingpeng Li; Xufeng Jing; Junjie Zhang; Shiqing Xu; Hellmut Eckert; Xianghua Zhang

doi:10.1364/PRJ.4.000214

Photonics Research, Volume. 4, Issue 6, 214(2016)

Thermal and luminescent properties of 2 μm emission in thulium-sensitized holmium-doped silicate-germanate glass

Rong Chen¹, Ying Tian^2、*, Bingpeng Li¹, Xufeng Jing², Junjie Zhang¹, Shiqing Xu^1,3, Hellmut Eckert⁴, and Xianghua Zhang⁵

Author Affiliations

¹College of Materials Science and Engineering, China Jiliang University, Hangzhou 310018, China

²Institute of Optoelectronic Technology, China Jiliang University, Hangzhou 310018, China

³email:sxucjlu@163.com

⁴Institut für Physikalische Chemie, WWU Münster, Corrensstra?e 30, D 48149 Münster, Germany

⁵Laboratory of Glasses and Ceramics, UMR 6226 CNRS-University of Rennes Cedex 135042, France

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Figures & Tables(11)

Fig. 1. Deconvolution of Raman spectrum of SG glass using symmetric Gaussian functions.

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Fig. 2. Absorption spectra of Tm3+ single-doped and Tm3+/Ho3+ co-doped silicate-germanate glasses in the range of 400–2200 nm.

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Fig. 3. Fluorescence spectra of the Tm3+/Ho3+ co-doped silicate-germanate glasses.

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Fig. 4. Energy level diagrams and energy transfer sketch map of Tm3+ and Ho3+ ions.

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Fig. 5. Emission cross sections of silicate-germanate glasses doped with 1.5 mol% Tm2O3 and 1 mol% Ho2O3.

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Fig. 6. (a) Fluorescence decay curve of Tm3+/Ho3+ co-doped glass sample from Tm3+:F43→H63. Inset shows the decay curve of Tm3+ singly doped glass sample. (b) Fluorescence decay curve of Tm3+/Ho3+ co-doped glass samples from Ho3+:I75→I85.

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Table 1. Compositions of the Prepared Glasses

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Table 1. Compositions of the Prepared Glasses

Samples	Glass Compositions (mol%)
S0	$60 {SiO}_{2} - 20 (CaO + {Li}_{2} O) - 5 {Nb}_{2} O_{5} - 15 BaO$
SG	$30 {SiO}_{2} - 30 {GeO}_{2} - 20 (CaO + {Li}_{2} O) - 5 {Nb}_{2} O_{5} - 15 BaO$
SGT1	$30 {SiO}_{2} - 30 {GeO}_{2} - 20 (CaO + {Li}_{2} O) - 5 {Nb}_{2} O_{5} - 15 BaO - 0.5 {Tm}_{2} O_{3}$
SGT2	$30 {SiO}_{2} - 30 {GeO}_{2} - 20 (CaO + {Li}_{2} O) - 5 {Nb}_{2} O_{5} - 15 BaO - 1.5 {Tm}_{2} O_{3}$
SGTH1	$30 {SiO}_{2} - 30 {GeO}_{2} - 20 (CaO + {Li}_{2} O) - 5 {Nb}_{2} O_{5} - 15 BaO - 1 {Ho}_{2} O_{3} - 0.5 {Tm}_{2} O_{3}$
SGTH2	$30 {SiO}_{2} - 30 {GeO}_{2} - 20 (CaO + {Li}_{2} O) - 5 {Nb}_{2} O_{5} - 15 BaO - 1 {Ho}_{2} O_{3} - 1.5 {Tm}_{2} O_{3}$

Table 2. Physical and Thermal Properties of Silicate-Germanate Glasses
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Table 2. Physical and Thermal Properties of Silicate-Germanate Glasses
Sample Parameter Value
S0 Density $ρ$ ( $g / {cm}^{3}$ ) 3.36
Refractive index $n_{D}$ 1.61
SG Density $ρ$ ( $g / {cm}^{3}$ ) 3.56
Refractive index $n$ 1.69
SGTH Refractive index $n$ 1.70
$T_{g}$ (°C) 585
$T_{x}$ (°C) 740
$Δ T$ (°C) 155
Sample thickness (mm) 1.50

Table 3. J-O intensity Parameters (Ωλ, λ=2, 4, 6) (×10−20 cm2) of Ho3+ Ions in Various Glass Hosts

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Table 3. J-O intensity Parameters (Ωλ, λ=2, 4, 6) (×10−20 cm2) of Ho3+ Ions in Various Glass Hosts

Samples	$Ω_{2}$	$Ω_{4}$	$Ω_{6}$	Trend	Reference
SGTH2	6.5	2.61	0.33	$Ω_{2} > Ω_{4} > Ω_{6}$	This work
Tellurite	5.21	2.28	2.18	$Ω_{2} > Ω_{6} > Ω_{4}$	[14]
Silicate	5.20	1.80	1.20	$Ω_{2} > Ω_{4} > Ω_{6}$	[40]
Phosphate	3.33	3.01	0.61	$Ω_{2} > Ω_{4} > Ω_{6}$	[40]
Fluoride	1.86	1.90	1.32	$Ω_{2} > Ω_{6} > Ω_{4}$	[41]
Fluorophosphate	3.23	2.71	1.82	$Ω_{2} > Ω_{4} > Ω_{6}$	[42]
Germanate	6.60	1.75	0.99	$Ω_{2} > Ω_{4} > Ω_{6}$	[43]

Table 4. Spontaneous Transition Probability Arad, Branching Ratio β, and Radiative Lifetime τrad for Different Excited Levels of Ho3+ in Silicate-Germanate Glass

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Table 4. Spontaneous Transition Probability Arad, Branching Ratio β, and Radiative Lifetime τrad for Different Excited Levels of Ho3+ in Silicate-Germanate Glass

Transition	Energy ( ${cm}^{- 1}$ )	$A_{rad} (s^{- 1})$	$β$ (%)	$τ_{rad}$ (ms)
${}^{5}{I_{7}} \to {}^{5}{I_{8}}$	5139	103.46	100	9.67
${}^{5}{I_{6}} \to {}^{5}{I_{8}}$	8681	155.77	84.20	5.41
${}^{5}{I_{6}} \to {}^{5}{I_{7}}$	3321	29.23	–	–
${}^{5}{I_{5}} \to {}^{5}{I_{8}}$	11187	61.66	37.51	6.08
${}^{5}{I_{5}} \to {}^{5}{I_{7}}$	6046	82.36	–	–
${}^{5}{I_{5}} \to {}^{5}{I_{6}}$	2726	20.37	–	–
${}^{5}{F_{5}} \to {}^{5}{I_{8}}$	15528	2039.53	77.33	0.38
${}^{5}{F_{5}} \to {}^{5}{I_{7}}$	10384	1215.8	–	–
${}^{5}{F_{5}} \to {}^{5}{I_{6}}$	7067	178.8	–	–
${}^{5}{F_{5}} \to {}^{5}{I_{5}}$	4342	14.4	–	–

Table 5. Peak Cross Section σepeak, FWHM, Radiative Lifetime τm, σepeak×FWHM and σepeak×τm of I75→I85 Transition of Ho3+ in Different Glass Samples

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Table 5. Peak Cross Section σepeak, FWHM, Radiative Lifetime τm, σepeak×FWHM and σepeak×τm of I75→I85 Transition of Ho3+ in Different Glass Samples

Glasses	FWHM(nm)	$σ_{e}^{peak}$ ( $10^{- 21} {cm}^{2}$ )	$τ_{m} (ms)$	$σ_{e}^{peak} \times FWHM$ ( $10^{- 28} {cm}^{3}$ )	$σ_{e}^{peak} \times τ_{m}$ ( $10^{- 21} {cm}^{2} \cdot ms$ )	Reference
SGTH2	153	4.78	9.67	731.34	46.22	This paper
Silicate	82	7.0	0.32	574	2.24	[8]
Germanate	84	4.0	0.36	336	1.44	[8]
Gallate	141	3.8	8.2	535.8	31.16	[8]
Fluoride	118	5.3	26.7	625	141.51	[8]
Tellurite	–	10.7	2.2	–	23.54	[11]

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Rong Chen, Ying Tian, Bingpeng Li, Xufeng Jing, Junjie Zhang, Shiqing Xu, Hellmut Eckert, Xianghua Zhang, "Thermal and luminescent properties of 2 μm emission in thulium-sensitized holmium-doped silicate-germanate glass," Photonics Res. 4, 214 (2016)

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Paper Information

Category: Materials

Received: Jul. 6, 2016

Accepted: Aug. 27, 2016

Published Online: Dec. 23, 2016

The Author Email: Ying Tian (tianyingcjlu@163.com)

DOI:10.1364/PRJ.4.000214

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Compositions of the Prepared Glasses

Table 1. Compositions of the Prepared Glasses

Table 2. Physical and Thermal Properties of Silicate-Germanate Glasses

Table 2. Physical and Thermal Properties of Silicate-Germanate Glasses

Table 3. J-O intensity Parameters (Ωλ, λ=2, 4, 6) (×10−20 cm2) of Ho3+ Ions in Various Glass Hosts

Table 3. J-O intensity Parameters (Ωλ, λ=2, 4, 6) (×10−20 cm2) of Ho3+ Ions in Various Glass Hosts

Table 4. Spontaneous Transition Probability Arad, Branching Ratio β, and Radiative Lifetime τrad for Different Excited Levels of Ho3+ in Silicate-Germanate Glass

Table 4. Spontaneous Transition Probability Arad, Branching Ratio β, and Radiative Lifetime τrad for Different Excited Levels of Ho3+ in Silicate-Germanate Glass

Table 5. Peak Cross Section σepeak, FWHM, Radiative Lifetime τm, σepeak×FWHM and σepeak×τm of I75→I85 Transition of Ho3+ in Different Glass Samples

Table 5. Peak Cross Section σepeak, FWHM, Radiative Lifetime τm, σepeak×FWHM and σepeak×τm of I75→I85 Transition of Ho3+ in Different Glass Samples