| 飞秒激光辐照Tm:YAG晶体的紫外发光研究(英文) |
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| 引用本文： | 孙晓慧,朱鹏飞,狄聚青. 飞秒激光辐照Tm:YAG晶体的紫外发光研究(英文)[J]. 人工晶体学报, 2012, 0(1): 28-30,35 |
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| 作者姓名： | 孙晓慧 朱鹏飞 狄聚青 |
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| 作者单位： | 上海工程技术大学基础教学学院;中国科学院上海光学精密机械研究所 |
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| 基金项目： | Project supported by Shanghai University of Engineering Science(2011XY35) |
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| 摘 要： | 本文报道了室温下飞秒激光辐照Tm∶YAG晶体的紫外光上转换荧光。Tm3+荧光的强度与泵浦光的功率之间的依赖关系揭示了晶体的上转换过程由三光子吸收过程所主导。研究表明上能级粒子的增加来自于Tm3+吸收一个泵浦光子跃迁到3H4能级后再吸收两个泵浦光子,然后离子跃迁至下能级产生上转换荧光。
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| 关 键 词： | Tm∶YAG 激光辐照 三光子吸收 吸收光谱 荧光光谱 |
Ultraviolet Luminescence of Tm:YAG Crystal by Direct Irradiation with Femtosecond Laser |
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| SUN Xiao-hui,ZHU Peng-fei,DI Ju-qing. Ultraviolet Luminescence of Tm:YAG Crystal by Direct Irradiation with Femtosecond Laser[J]. Journal of Synthetic Crystals, 2012, 0(1): 28-30,35 |
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| Authors: | SUN Xiao-hui ZHU Peng-fei DI Ju-qing |
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| Affiliation: | 1.College of Fundamental Studies,Shanghai University of Engineering Science,Shanghai 201620,China;2.Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China)(Received 1 November 2011,accepted 25 November 2011) |
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| Abstract: | The ultraviolet upconversion luminescence from 1I6 state of Tm3+ at room temperature observed in Tm∶YAG crystal by femtosecond laser irradiation.The dependence of the intensity of the Tm3+ emission on the pump power reveals that the three-photon excitation is dominant in the upconversion process.It is suggested that one-photon excitation to 3H4 level followed by a two-photon absorption produces,the population of upper laser level in which the characteristic luminescence occurs. |
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| Keywords: | Tm∶YAG laser irradiation three-photon absorption absorption spectrum fluorescence spectrum |
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