研究目的
To explore a new Yb-doped fiber with high thermal conductivity, excellent luminescent properties, and simpler fabrication processes to overcome the limitations of traditional Yb-doped silica fibers.
研究成果
A YDFs were drawn with the CO2-laser drawing tower, by tube-and-rod method. The spectrum property of YDF was analyzed in detail and the emission spectrum covered the wavelength range from 750 nm to 1400 nm. The YDF amplifier achieves a wide spectrum amplification of 150 nm and the maximum net gain is approximately 17 dB. Therefore, the YDF is of practical applications in near-infrared broadband amplifier.
研究不足
The width of the fluorescent band is still very narrow, and amplification of the wideband signal cannot be achieved.
1：Experimental Design and Method Selection:
The fabrication of YDFs employing CO2 laser drawing-tower method with tube-and-rod technique is demonstrated.
2：Sample Selection and Data Sources:
The preform was composed of a commercially Yb: YAG crystal and a high-purity silica substrate tube.
3：List of Experimental Equipment and Materials:
A CO2-laser fiber drawing tower with an input laser power of ~40% was used.
4：Experimental Procedures and Operational Workflow:
The composition distribution profiles was measured by scanning electron microscope and energy dispersive spectrometer (SEM-EDS). The photoluminescence excitation and emission spectra were measured using an FLS-980 spectrometer.
5：Data Analysis Methods:
The fluorescence spectrum was collected using a 980 nm laser as the pump source, using an optical spectrum analyzer (OSA, AQ6370, YOKOGAWA) with a resolution of 0.02 nm.
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