研究目的
Investigating the spectroscopic and laser characteristics of a 3 at.% Tm:Y2O3 transparent ceramic at cryogenic temperatures.
研究成果
The study successfully characterized the spectroscopic and laser performance of Tm:Y2O3 transparent ceramic at cryogenic temperatures, achieving a maximum output power of 6.4 W with a slope efficiency of 52.0%. Future work will focus on using samples of higher dopant concentrations and optimizing pump sources for higher output power.
研究不足
The study was limited to a specific concentration of Tm:Y2O3 (3 at.%) and did not explore higher dopant concentrations or other sesquioxide ceramics.
1：Experimental Design and Method Selection:
The study involved absorption and photoluminescence measurements from room temperature down to 6 K. A spectrophotometer and an optical spectrum analyzer were used for measurements.
2：Sample Selection and Data Sources:
A 3 at.% Tm:Y2O3 transparent ceramic was used.
3：List of Experimental Equipment and Materials:
Equipment included a Leybold helium closed cycle cryostat, Cary 5000 UV–Vis–NIR spectrophotometer, AQ6375B optical spectrum analyzer, and a PbS detector.
4：Experimental Procedures and Operational Workflow:
The sample was cooled using a cryostat, and measurements were taken at various temperatures.
5：Data Analysis Methods:
Absorption, emission, and gain cross sections were determined using theoretical approaches based on Lambert–Beer’s law, reciprocity, and Fuchtbauer-Ladenburg methods.
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Digital oscilloscope
WaveSurfer 64MXs-B
Teledyne LeCroy
Used to collect and average signals from the PbS detector.
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Closed cycle helium cryostat
CH-204
JANIS
Used to achieve cryogenic temperatures for the sample.
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Lake Shore temperature controller
DT 670
Lake Shore
Used to monitor and maintain the sample temperature.
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Cary 5000 UV–Vis–NIR spectrophotometer
Cary 5000
Agilent
Used for absorption measurements in the study.
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AQ6375B optical spectrum analyzer
AQ6375B
YOKOGAWA
Used for photoluminescence measurements.
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PbS detector
PDA30G-EC
Thorlabs
Used for lifetime measurements.
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