研究目的
Investigating the enhancement mechanisms of Tm3+-codoping on 2 μm emission in Ho3+ doped fluoroindate glasses under 888 nm laser excitation.
研究成果
Tm3+ ions can enhance the 2 μm emission of Ho3+ doped fluoroindate glass pumped by an 888 nm laser due to bidirectional energy transfer processes. The Ho3+/Tm3+ co-doped fluoroindate glass shows promise as a gain medium for 2 μm fiber lasers.
研究不足
The study is limited to room temperature measurements and does not explore the effects of temperature variations on the emission properties. Additionally, the solubility of rare earth ions in the glass matrix and potential fluorescence quenching at higher concentrations are noted limitations.
1：Experimental Design and Method Selection:
The study involved preparing Ho3+ doped and Ho3+/Tm3+ co-doped fluoroindate glass samples using a conventional melt-quenching method. The emission properties were compared under 888 nm laser excitation.
2：Sample Selection and Data Sources:
Glass samples with varying Tm3+ concentrations were prepared. Absorption and emission spectra, and energy level lifetime were measured.
3：List of Experimental Equipment and Materials:
A PerkinElmer Lambda-750 spectrophotometer, Zolix Omni-λ300i Monochromators and Spectrographs, an 888 nm laser dioxide, and an 1150 nm single-mode Raman fiber laser were used.
4：Experimental Procedures and Operational Workflow:
The mixture was melted at 850 °C, poured onto a preheated copper plate, annealed, and polished for optical measurements.
5：Data Analysis Methods:
The McCumber theory was used to calculate absorption and emission cross-sections.
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Zolix Omni-λ300i Monochromators and Spectrographs
Omni-λ300i
Zolix
Recording fluorescence spectra
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PerkinElmer Lambda-750 spectrophotometer
Lambda-750
PerkinElmer
Measuring absorption spectra in the range of 0.2–2.5 μm
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InGaAs detector
Detecting fluorescence spectra
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InSb detector
Detecting fluorescence spectra
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888 nm laser dioxide
Changchun Institute of Optics and Fine Mechanics
Pump source for excitation
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1150 nm single-mode Raman fiber laser
RFL-1150 nm-20 W
Precilasers
Pump source for excitation
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tunable Optical Parametric Oscillator
Horizon Ⅱ OPO
Measuring fluorescence decay curves
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spectrometer
Synergy 1000 M
Detecting fluorescence decay curves
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digital phosphor oscilloscope
DP04104B
Recording fluorescence decay curves
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