Effect of relative alkali content on absorption linewidth in erbium-doped tellurite glasses

Neindre, Lydia Le; Jiang, Shibin; Hwang, Bor Chyuan; Luo, Tao; Watson, Jason P.; Peyghambarian, N.

doi:10.1016/s0022-3093(99)00428-7

Cited by 87 publications

(35 citation statements)

References 16 publications

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“…At present, TZN glass (75TeO 2 -20ZnO-5Na 2 O) is known as a new candidate for fiber devices because it has good chemical durability, thermal stability and excellent rare earth solubility, but the spectroscope properties of doped Yb 3+ ion is not very perfect and needed to be improved [15]. The objective of this work is, on the basis of TZN glass composition and regulating the composition with 2.5K 2 O and 2.5Na 2 O instead of 5.0Na 2 O for considering the effect of relative alkali content on absorption linewidth [19], adding 5.0 La 2 O 3 for similar solubility of La 2 O 3 and Yb 2 O 3 in oxide glasses and large quantities of Yb 2 O 3 can be incorporated into the host by substituting La 2 O 3 with Yb 2 O 3 , replacing of ZnO with WO 3 gradually for improving the spectroscopic properties, to investigate the thermal stabilities and spectroscope properties of Yb 3+ -doped multi-componential tellurite-based glasses and to survey the feasibility of these tellurite-based glasses as the candidate for a new type of Yb 3+ -doped laser host material.…”

Section: Introductionmentioning

confidence: 99%

Thermal stability and spectroscopic properties of Yb3+-doped zinc–tungsten–tellurite glasses

Wang

Dai

et al. 2004

Journal of Alloys and Compounds

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Section: Introductionmentioning

confidence: 99%

Thermal stability and spectroscopic properties of Yb3+-doped zinc–tungsten–tellurite glasses

Wang

Dai

et al. 2004

Journal of Alloys and Compounds

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“…The ΔTðT x − T g Þ has been frequently used as a rough estimate of the glass stability against crystallization [18]. The glass stability is closely related to fiber drawing because fiber drawing is a reheating process during which any crystallization will increase the scattering loss of the fiber and degrade the laser properties [19]. It is desirable for ΔT to be as large as possible to achieve a wide working range of temperature during fiber drawing [20].…”

mentioning

confidence: 99%

Intense 27 μm and broadband 20 μm emission from diode-pumped Er^3+/Tm^3+/Ho^3+-doped fluorophosphate glass

Tian

et al. 2011

Opt. Lett.

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This Letter reports intense emission at 2:7 μm and broadband emission at 2:0 μm from Er 3þ =Tm 3þ =Ho 3þ -doped fluorophosphate glass. The fluorescence characteristics and energy transfer upon excitation of a conventional 980 nm laser diode are investigated. Based on the fluorescence spectra and lifetime measurement, the effect of Tm 3þ and Ho 3þ ions on intense 2:7 μm emission in fluorophosphate glass is demonstrated. It is also found that the effective bandwidth of 2:0 μm emission due to Recently, the development of mid-IR diode-pumped solid state lasers has been an area of great interest due to their various useful applications including military, remote sensing, eye-safe laser radar, and medical surgery [1,2]. Er 3þ -doped glass is well suited for the above applications owing to its 2:7 μm emission, which is close to the most pronounced absorption band of water at 3 μm. However, the laser characteristics of 2:7 μm due to the 4 I 11=2 → 4 I 13=2 transition are rather poor. The intrinsic difficulty to obtain laser action on this transition is mainly related to shorter fluorescence lifetime of the upper laser level 4 I 11=2 than that of the lower laser level 4 I 13=2 [3,4]. To obtain intense 2:7 μm emission, the artificial depletion of the 4 I 13=2 level is required, which can be achieved by suitable codoping of rare-earth ions and utilizing the energy transfer between levels of the respective ions having equal or close energies [5]. It has been reported that Tm 3þ ions can deplete the Er 3þ : 4 I 13=2 level to obtain 2:7 μm emission in GeGaAsS glass using a titanium-sapphire tunable laser as an excitation source, which can be attributed to the energy transfer between the Tm 3þ : 3 F 4 and Er 3þ : 4 I 13=2 levels [4]. As is shown in Fig. 1 Additionally, Ho 3þ lasers are also well suited for mid-IR range-finding, atmospheric monitoring, and sensing applications because their 2:0 μm emissions are within an atmospheric transparency window [6,7]. To enhance pump absorption, Ho 3þ -doped glasses have been sensitized with either Tm 3þ , Yb 3þ , or Er 3þ [8,9]. Nevertheless, there are few reports about the 2:0 μm emission in Er 3þ =Tm 3þ =Ho 3þ -doped glass [10].In order to get powerful mid-IR emissions from Er 3þ =Tm 3þ =Ho 3þ -doped glass, the host glass is as important as the choice of rare-earth ions. Regarding the emission at 2:7 μm, most research has focused on Er 3þ -doped fluoride and chalcogenide glasses [11][12][13]. Fluorophosphate (FP) glasses combine significant advantages of the fluoride and phosphate glass, and own a less complex fabrication route than that of fluoride and chalcogenide glasses [14]. They are characterized by good moisture resistance, high solubility for rare-earth ions, and broad absorption and emission bands [15,16]. In particular, FP glasses appear interesting for high power solid state lasers due to their low nonlinear refractive index, which will minimize associated phenomena such as self-focusing and self-phase modulation in high power lasers and ensure the highest possible laser i...

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“…5 show the size of crystal can be controlled at the range of 10 ~ 50 nm by heating time. The glass-ceramics remain transparent due to the nano-scale of the fluoride crystals precipitated in the glass matrix [14]. In Fig.…”

Section: Resultsmentioning

confidence: 97%

Effect of heat treatment on structure and up-conversion emission of Er3+-doped GaF3/InF3 based fluoride glasses

et al. 2011

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GaF 3 /InF 3 based oxyfluoride glasses 20GaF 3 -15InF 3 -10SnF 2 -15ZnF 2 -17CdF 2 -3P 2 O 5 -(20-x) PbF 2 -xErF 3 were obtained by melt quenching method. By appropriate heat treatment of the as-prepared glasses above, transparent glass-ceramics were obtained with the formation of tetragonal ZnF 2 and cubic ErGa 5 O 12 nanocrystals in the glass matrix confirmed by X-ray diffraction. Differential scanning calorimetry (DSC), transform infrared spectrum and up-conversion luminescence measurements excited at 980nm were performed on as-prepared glasses and glass-ceramics. The different effects of Er 3+ content on ΔT 1 (ΔT 1 = T x -T g ) and ΔT 2 (ΔT 2 = T p 2 -T p 1 ) suggest the best content is 0.1 ~ 1 mol.% for controllable crystallization. The intensity of green luminescence significantly increased in transparent glass-ceramic until the content of Er 3+ reaches at 2 mol.% compared to that in as-prepared, but it did not enhance linearly with the increasing time. These results are attributed to the change of environment of Er 3+ ions and the decrease distance when Er 3+ ions are incorporated into the precipitated nanocrystals.

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Effect of relative alkali content on absorption linewidth in erbium-doped tellurite glasses

Cited by 87 publications

References 16 publications

Thermal stability and spectroscopic properties of Yb3+-doped zinc–tungsten–tellurite glasses

Thermal stability and spectroscopic properties of Yb3+-doped zinc–tungsten–tellurite glasses

Intense 27 μm and broadband 20 μm emission from diode-pumped Er^3+/Tm^3+/Ho^3+-doped fluorophosphate glass

Effect of heat treatment on structure and up-conversion emission of Er3+-doped GaF3/InF3 based fluoride glasses

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