Er3+/Tm3+ codoped tellurite glass for blue upconversion—Structure, thermal stability and spectroscopic properties

Yin, Deshun; Qi, Yawei; Peng, Shengxi; Zheng, Shichao; Chen, Fen; Gao, Yang; Wang, Xunsi; Zhou, Yaxun

doi:10.1016/j.jlumin.2013.09.060

Cited by 23 publications

(6 citation statements)

References 48 publications

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“…It is known that the maximum phonon energy of the structural units of the WO 3 oxide is about 920 cm −1 . In this energy transfer process, one phonon was likely needed to compensate the energy mismatch of about 700 cm −1 [28]. In current reports of the authors' knowledge [28,29], Er 3+ /Tm 3+ co-doped materials had been used to excite the visible light and near-infrared fluorescence by the 980 nm or 808 nm laser diode.…”

Section: Resultsmentioning

confidence: 99%

1.9 μm laser and visible light emissions in Er³⁺/Tm³⁺ co-doped tellurite glass microspheres pumped by a broadband amplified spontaneous emission source

Qin

Huang

Liao

et al. 2019

J. Opt.

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From Er3+/Tm3+ co-doped tellurite glass microspheres, simultaneous laser oscillation at 1.9 μm, and green and red fluorescence emissions with three photons upconversion luminescence were obtained. The microsphere was pumped by a low-cost 1550 nm broadband amplified spontaneous emission source instead of a bulky and expensive tunable laser. It as a non-polarized light provided a wide wavelength range and the multiple wavelengths resonant absorption was obviously observed from the transmission spectra. The use of broadband source made the entire microsphere laser more adaptively stable to withstand the vibration interference and temperature variations. The coupled threshold power was as low as 1.5 mW. It was demonstrated that the Er3+ ions acted as sensitizers to efficiently absorb the pump photons and transfer energy to Tm3+ ions. Therefore, this approach would have potential applications in optical fiber lasers, sensors and lighting devices.

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Section: Resultsmentioning

confidence: 99%

1.9 μm laser and visible light emissions in Er³⁺/Tm³⁺ co-doped tellurite glass microspheres pumped by a broadband amplified spontaneous emission source

Qin

Huang

Liao

et al. 2019

J. Opt.

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“…Mahraz et al, (2015) [39] had reported that a radiative lifetime is a parameter on how rapid a particular level gets depopulated. The transition of 4 I 13/2 level has a longer lifetime benefits the population inversion between the 4 I 13/2 and 4 I 15/2 levels [60]. It is noticed that the lifetime of silver-co-doped erbium zinc tellurite glasses is higher at 4 I 13/2 → 4 I 15/2 transition level.…”

Section: Judd-ofelt Analysismentioning

confidence: 92%

Zinc Tellurite Glass System Incorporated with Erbium Oxide and Silver Oxide as Ultra-Broad (S+C+L) Bands Optical Communication

Nazrin

Halimah

Yee

et al. 2022

Preprint

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Melt-quenching method was used to synthesize a series of zinc tellurite glasses doped with erbium oxide and silver oxide. At room temperature, X-ray diffraction (XRD) and density measurement were implemented to characterize the prepared glass samples. The amorphous nature of the glass samples is proven from the XRD spectra obtained in this work. The density of the glass showed an increment trend from 4.4673 to 4.9705 g/cm3 when adding more silver oxide, which can prove that the glass strength is higher. For photoluminescence analysis, blue, green and red emissions were found in the glass series under 375 nm excitation wavelength. According to McCumber theory, higher emission cross-section and higher FWHM are efficient for both broadband amplifier and laser application. More extensive and flatter gain with a maximum gain difference has covered both C and L bands for optical communication, providing a few channels in the wavelength division multiplex network (WDM). The high efficiency of optical amplification is justified with a higher gain figure of merit and larger gain bandwidth. According to McCumber’s theory, all the results proved that 0.03 molar fraction of silver oxide is the most optimum concentration to be applied in the optical application. In Judd-Ofelt analysis, spectroscopic quality factor and shorter lifetime is a crucial parameter for obtaining intense laser transition, strong emission probabilities and encouraging the laser optical transition, which was successfully attained in all glass samples. The present glass system is also applicable for white light application since the standard equal energy point from all glass samples were located near the center of the CIE diagram (0.33, 0.33). In the meantime, higher values of CCT range from 6761 to 6937 K produce light with a better image as compared to lower CCT. Higher CCT is commercially used in LCD (liquid crystal display) and CRT (cathode ray tube) screens. The colour purity is a parameter for better white LED application, whereas low colour purity is for pure white light emission. Therefore, lower colour purity was found around 10.7 around 18.8% in all glass samples.

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“…The Judd-Ofelt parameters (Ω , = 2, 4, 6) can be used to compute the radiative transition probability rad (electric dipole transition probability ED and magnetic dipole transition probability MD ), fluorescence branching ratio , and radiative lifetime rad of Er 3+ (NPs) ions [31]. The radiative transition probability rad (also called Einstein coefficient for spontaneous emission) for any excited transition state can be expressed by the following relation:…”

Section: Judd-ofelt Analysismentioning

confidence: 99%

Green Emission of Tellurite Based Glass Containing Erbium Oxide Nanoparticles

Noorazlan

Kamari

Baki

et al. 2015

Journal of Nanomaterials

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Investigation on green emission and spectral intensity of tellurite based glass containing erbium oxide NPs is one of the crucial issues. Tellurite based glass containing erbium oxide NPs with the composition of{[(TeO2)0.70(B2O3)0.30]0.7(ZnO)0.3}0.95(Er2O3)0.05has been prepared by using conventional melt-quenching method. The structural and optical properties of the glass sample were characterized by using XRD, FTIR, UV-Vis absorption, and PL spectroscopy. The amorphous structural arrangement was proved through XRD method. The formation of TeO3and BO3units was revealed by FTIR analysis. Five transition states of excitation were shown in UV-Vis spectra which arise from the ground state4I15/2to the excited states4G11/2+2H9/2+4F5/2+4F7/2+2H11/2+4S3/2+4F9/2+4I9/2+4I11/2. The intensity parametersΩt(t=2, 4, 6) are calculated and follow the trend ofΩ2>Ω4>Ω6. Broad green emission at 559 nm under 385 nm excitation was obtained.

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Er3+/Tm3+ codoped tellurite glass for blue upconversion—Structure, thermal stability and spectroscopic properties

Cited by 23 publications

References 48 publications

1.9 μm laser and visible light emissions in Er³⁺/Tm³⁺ co-doped tellurite glass microspheres pumped by a broadband amplified spontaneous emission source

1.9 μm laser and visible light emissions in Er³⁺/Tm³⁺ co-doped tellurite glass microspheres pumped by a broadband amplified spontaneous emission source

Zinc Tellurite Glass System Incorporated with Erbium Oxide and Silver Oxide as Ultra-Broad (S+C+L) Bands Optical Communication

Green Emission of Tellurite Based Glass Containing Erbium Oxide Nanoparticles

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Er3+/Tm3+ codoped tellurite glass for blue upconversion—Structure, thermal stability and spectroscopic properties

Cited by 23 publications

References 48 publications

1.9 μm laser and visible light emissions in Er3+/Tm3+ co-doped tellurite glass microspheres pumped by a broadband amplified spontaneous emission source

1.9 μm laser and visible light emissions in Er3+/Tm3+ co-doped tellurite glass microspheres pumped by a broadband amplified spontaneous emission source

Zinc Tellurite Glass System Incorporated with Erbium Oxide and Silver Oxide as Ultra-Broad (S+C+L) Bands Optical Communication

Green Emission of Tellurite Based Glass Containing Erbium Oxide Nanoparticles

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Product

Resources

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1.9 μm laser and visible light emissions in Er³⁺/Tm³⁺ co-doped tellurite glass microspheres pumped by a broadband amplified spontaneous emission source

1.9 μm laser and visible light emissions in Er³⁺/Tm³⁺ co-doped tellurite glass microspheres pumped by a broadband amplified spontaneous emission source