研究目的
Investigating the spectral-luminescent characteristics of erbium ions in photo-thermo-refractive (PTR) glasses doped with different concentrations of ytterbium and erbium oxides, and demonstrating laser action at room temperature.
研究成果
The study successfully demonstrated the spectroscopic and laser properties of Er/Yb co-doped PTR glasses, with significant findings on emission cross-sections, quantum yield, and energy transfer efficiency. Laser action was achieved at room temperature, indicating the potential of these materials for laser applications.
研究不足
The study is limited to the specific compositions of PTR glasses doped with Er3+ and Yb3+ ions. The laser efficiency could be affected by thermal effects and upconversion processes.
1：Experimental Design and Method Selection:
The study involved the synthesis of PTR glasses doped with Er3+ and Yb3+ ions, followed by spectral and luminescent characterization. Judd-Ofelt theory was applied to analyze the spectroscopic properties.
2：Sample Selection and Data Sources:
PTR glasses were synthesized with varying concentrations of Er2O3 and Yb2O3. Absorption and fluorescence spectra were measured using a spectrophotometer and a monochromator with an InGaAs detector.
3：Absorption and fluorescence spectra were measured using a spectrophotometer and a monochromator with an InGaAs detector. List of Experimental Equipment and Materials:
3. List of Experimental Equipment and Materials: Perkin-Elmer Lambda 900 spectrophotometer, Acton-300 monochromator, InGaAs detector, pulsed laser (Solar Laser system LQ129), digital oscilloscope (Infinium HP54830), transmission electron microscope (Jeol JEM-2100F), Rigaku X-ray diffractometer.
4：Experimental Procedures and Operational Workflow:
Glasses were synthesized, annealed, and characterized for their structural, absorption, and fluorescence properties. Laser properties were investigated using a diode laser pump source.
5：Data Analysis Methods:
Judd-Ofelt parameters were calculated to derive emission cross-sections and radiative lifetimes. Energy transfer efficiency was calculated from fluorescent lifetime measurements.
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Perkin-Elmer Lambda 900 spectrophotometer
Lambda 900
Perkin-Elmer
Measurement of absorbance spectra within a spectral range of 250–1700 nm.
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Infinium HP54830 digital oscilloscope
HP54830
Agilent Technologies
Connected to a monochromator with an InGaAs detector for lifetime decay measurements.
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Jeol JEM-2100F microscope
JEM-2100F
Jeol
Study the structure of the PTR glass.
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Acton-300 monochromator
Acton-300
Acton Research Corp.
Obtaining fluorescence spectra.
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InGaAs detector
Detection of fluorescence spectra.
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Solar Laser system LQ129
LQ129
Solar Laser
Pulsed laser for lifetime decay measurements.
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Rigaku X-ray diffractometer
Rigaku
Demonstration of the crystalline phase in the glass bulk.
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