掺Er3+ 锗酸盐玻璃上转换发光

范文编号:CL119  范文字数:8736,页数:26

摘     要
 
 蓝绿光波段激光在高密度数据存储、海底通信、大屏幕显示、检测和激光医疗等领域有着广泛的应用价值。本研究的主要目的在于探索适用于制作多功能光子器件的基质玻璃材料。通过对掺Er3+锗酸盐玻璃红外光谱、吸收光谱和上转换光谱等性质的研究，为其在上转换光潜激光器中的潜在应用提供基础。研究发现，（1）随PbF2含量增加，上转换发光强度先增加后降低，在10mol％达到最大，基质玻璃材料的热稳定性能单调下降；（2）随PbO含量增加，上转换绿光和红光的强度比增加，基质玻璃材料的热稳定性能单调增加；（3）随Yb2O3含量增加，虽然能量转移效率先增加，后降低，并在Yb3+:Er3+=5:1时达到最大，但是上转换发光强度单调增加，说明仅仅通过计算能量转移效率并不能反映上转换发光强度的大小。上转换机理分析表明，上转换绿光和红光都是双光子吸收过程。本文的研究结果将为进一步制备掺Er3+双包层光纤提供重要依据。
 
关键词：上转换  掺Er3+锗酸盐玻璃  光谱性质

Abstract
 Blue green light wave section laser has extensive application value in high density data storage, seabed communication, large screen display and checkout and laser medical treatment and so on。The major purpose of this research is exploring the glass material which is suitable in making multi-functional photon parts。By researching the infrared spectra and absorption spectra, upconversion spectra of Yb3+-doped tetraphosphate glass,which provide the foundation for potential application of the upconversion lasers。The research results showed that(1) Following the PbF2 content increasing，the light intensity of upconversion increases and then descends，and achieves the maximum at 10mol%，but the thermostability of glass material decreases monotonous；(2) Following the PbO content increasing,the ratio of upconversion bule light and red light intensity increases,and the thermostability of glass material increases monotonous(3) Following the Pb2O3 content increasing, the energy transfer efficiency descends after increasing first，and achieves the maximum when the ratio of theYb3+ content and the Er3+ content is 5:1，but the light intensity of upconversion increases monotonous，which illuminates that only calculate energy transfer efficiency can’t reflect the magnitude of the light intensity of upconversion。Analysing the mechanism of upconversion，show that both upconversion bule light and red light are absorption courses of pair photon。The research results will provide the important basis of preparing Er3+-doped two layer optical fiber。
 
Key words：upconversion；Er3+-doped tetraphosphate glass；spectroscopic properties

目  录
中文摘要 I
英文摘要 II
目录 III
第一章     引言 1
第二章     实验方法 3
 2.1  玻璃样品的制备 3
 2.2  玻璃样品的测试 5
 2.2.1  玻璃密度测量 5
 2.2.2  玻璃折射率的测量 5
 2.2.3  玻璃的热分析 5
 2.2.4  光谱理论计算 6
 2.2.5  玻璃光谱的测量 6
第三章     实验结果与讨论 8
 3.1  GeO2-PbO（PbF2）玻璃上转换发光 8
 3.1.1  Er3+ 在不同基质中上转换发光的比较 8
 3.1.2  PbF2含量对Er3+上转换发光的影响 10
 3.2  Na2O-GeO2-PbO玻璃 12
 3.2.1  Er3+单掺的Na2O-GeO2-PbO玻璃的上转换发光 12
 3.2.2  Yb3+/Er3+双掺10Na2O-60GeO2-30PbO玻璃的上转换发光 15
第四章     结论 19
第五章     总结  20
参考文献 21
致谢 22

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