Optical properties of Yb3+-doped phosphate laser glasses

Venkatramu, V.; Vijaya, R.; León-Luis, Sergio F.; Babu, P. Suresh; Jayasankar, C.K.; Lavı́n, V.; Dhareshwar, L. J.

doi:10.1016/j.jallcom.2011.01.148

Cited by 47 publications

(11 citation statements)

References 51 publications

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“…These results indicate that the decrease in PLQY with increasing Yb 3+ concentration is not only due to reabsorption but also to concentration quenching. The quenching of lifetime may be either due to multiphonon relaxation, energy transfer among the Yb 3+ ions (diffusion limited)39 or direct coupling with OH − groups37. In the present study, since the amount of OH − groups is expected to be relatively constant in all the samples, it is assumed that the most dominant mechanisms for lifetime quenching are the energy transfer among the Yb 3+ ions, as well as the multiphonon relaxation.…”

Section: Resultsmentioning

confidence: 92%

Development of ytterbium-doped oxyfluoride glasses for laser cooling applications

Krishnaiah

Filho

Ledemi

et al. 2016

Sci Rep

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Oxyfluoride glasses doped with 2, 5, 8, 12, 16 and 20 mol% of ytterbium (Yb3+) ions have been prepared by the conventional melt-quenching technique. Their optical, thermal and thermo-mechanical properties were characterized. Luminescence intensity at 1020 nm under laser excitation at 920 nm decreases with increasing Yb3+ concentration, suggesting a decrease in the photoluminescence quantum yield (PLQY). The PLQY of the samples was measured with an integrating sphere using an absolute method. The highest PLQY was found to be 0.99(11) for the 2 mol% Yb3+: glass and decreases with increasing Yb3+ concentration. The mean fluorescence wavelength and background absorption of the samples were also evaluated. Upconversion luminescence under 975 nm laser excitation was observed and attributed to the presence of Tm3+ and Er3+ ions which exist as impurity traces with YbF3 starting powder. Decay curves for the Yb3+: 2F5/2 → 2F7/2 transition exhibit single exponential behavior for all the samples, although lifetime decrease was observed for the excited level of Yb3+ with increasing Yb3+ concentration. Also observed are an increase in the PLQY and a slight decrease in lifetime with increasing the pump power. Finally, the potential of these oxyfluoride glasses with high PLQY and low background absorption for laser cooling applications is discussed.

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Section: Resultsmentioning

confidence: 92%

Development of ytterbium-doped oxyfluoride glasses for laser cooling applications

Krishnaiah

Filho

Ledemi

et al. 2016

Sci Rep

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“…In glass hosts, phosphate glasses have been demonstrated to be a favorable material for optical lasers and amplifiers owing to their good thermal stability, excellent mechanical strength and outstanding ion-exchangeability [50][51][52][53][54][55][56][57]. With the addition of Al 2 O 3 , the chemical and thermal stability of phosphate glasses will be further improved for special requirements in wet chemical etching and ion-exchange process during waveguide fabrication [58][59][60][61].…”

Section: Introductionmentioning

confidence: 99%

Praseodymium ion doped phosphate glasses for integrated broadband ion-exchanged waveguide amplifier

Shen

Chen

Lin

et al. 2015

Journal of Alloys and Compounds

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“…It is well known that glasses based on P 2 O 5 are attractive optical materials due to their exceptional characteristics like a high transparency in a wide spectral region, low melting point and low refractive index [ 51 , 52 ]. Furthermore, phosphate systems doped with higher concentrations of rare earths or transition metal ions are amorphous, in contrast to other oxide glasses [ 53 ].…”

Section: Introductionmentioning

confidence: 99%

Influence of Oxide Glass Modifiers on the Structural and Spectroscopic Properties of Phosphate Glasses for Visible and Near-Infrared Photonic Applications

2020

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The effect of oxide modifiers on multiple properties (structural and spectroscopic) of phosphate glasses with molar composition 60P2O5-(10−x)Ga2O3-30MO-xEu2O3 and 60P2O5-(10−y)Ga2O3-30MO-yEr2O3 (where M = Ca, Sr, Ba; x = 0, 0.5; y = 0, 1) were systematically examined and discussed. The local structure of systems was evidenced by the infrared (IR-ATR) and Raman spectroscopic techniques. The spectroscopic behaviors of the studied glass systems were determined based on analysis of recorded spectra (excitation and emission) as well as luminescence decay curves. Intense red and near-infrared emissions (1.5 μm) were observed for samples doped with Eu3+ and Er3+ ions, respectively. It was found that the value of fluorescence intensity ratio R/O related to 5D0→7F2 (red) and 5D0→7F1 (orange) transition of Eu3+ ions depends on the oxide modifiers MO in the glass host. However, no clear influence of glass modifiers on the luminescence linewidth (FWHM) was observed for phosphate systems doped with Er3+ ions. Moreover, the 5D0 and 4I13/2 luminescence lifetimes of Eu3+ and Er3+ ions increase with the increasing ionic radius of M2+ (M = Ca, Sr, Ba) in the host matrix. The obtained results suggest the applicability of the phosphate glasses with oxide modifiers as potential red and near-infrared photoluminescent materials in photonic devices.

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Optical properties of Yb3+-doped phosphate laser glasses

Cited by 47 publications

References 51 publications

Development of ytterbium-doped oxyfluoride glasses for laser cooling applications

Development of ytterbium-doped oxyfluoride glasses for laser cooling applications

Praseodymium ion doped phosphate glasses for integrated broadband ion-exchanged waveguide amplifier

Influence of Oxide Glass Modifiers on the Structural and Spectroscopic Properties of Phosphate Glasses for Visible and Near-Infrared Photonic Applications

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