| Er~(3+)∶YVO_4的频率上转换动力学分析 |
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| 引用本文： | 施科桦,林林,冯卓宏,林剑峰,庄国华,郑志强. Er~(3+)∶YVO_4的频率上转换动力学分析[J]. 光学技术, 2010, 36(4) |
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| 作者姓名： | 施科桦 林林 冯卓宏 林剑峰 庄国华 郑志强 |
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| 基金项目： | 福建省自然科学基金，福建省科技厅项目，福建省教育厅B类项目，福建省青年人才创新项目 |
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| 摘 要： | 测量并分析了980nm抽运下Er3+∶YVO4晶体的上转换荧光,建立了描述Er3+离子跃迁的速率方程。通过求解速率方程并拟合1550nm,980nm和550nm的荧光衰减实验曲线,得到了4I13/2+4I13/2→4I15/2+4I9/2,4I11/2+4I11/2→4I15/2+4F7/2的频率上转换系数C22=9.221×10-17cm3s-1,C33=7.545×10-17cm3s-1。通过测量980nm抽运下的550nm荧光衰减谱,得到了4S3/2能级的主要上转换机制是以激发态吸收为主。
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| 关 键 词： | 光学材料 Er3+∶YVO4晶体 频率上转换 速率方程 |
Dynamics of frequency upconversion in Er3+:YVO4 crystal |
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| SHI Ke-hua,LIN Lin,FENG Zhuo-hong,LIN Jian-feng,ZHUANG Guo-hua,ZHENG Zhi-qiang. Dynamics of frequency upconversion in Er3+:YVO4 crystal[J]. Optical Technique, 2010, 36(4) |
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| Authors: | SHI Ke-hua LIN Lin FENG Zhuo-hong LIN Jian-feng ZHUANG Guo-hua ZHENG Zhi-qiang |
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| Abstract: | Upconversion spectrum in Er3+:YVO4 crystal is measured by the excitation of 980nm. A model for the dynamics of frequency upconversion process in Er3+:YVO4 crystal is proposed. The upconversion coefficients are obtained by numerically solving the rate equations of the model to fit the population dynamics of the 4I13/2,4I11/2 and 4S3/2 levels. The upconversion coefficients for 4I13/2+4I13/2→4I9/2+4I15/2 are C22=9.221×10-17cm3s-1 and the upconversion coefficients for 4I11/2+4I11/2→4I15/2+4F7/2 are C33=7.545×10-17cm3s-1. Based on the analysis of the 550nm decay curve after 980nm pump,the main upconversion process of 4S3/2 is excited state absorption. |
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| Keywords: | optical materials Er3+:YVO4 crystal frequency upconversion rate equation |
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