Judd–Ofelt analysis and optically stimulated two-photon absorption of Yb3+-doped NdAl3(BO3)4 single crystals
Judd–Ofelt analysis and optically stimulated two-photon absorption of Yb3+-doped NdAl3(BO3)4 single crystals
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DOI：
10.1016/j.jallcom.2009.10.230
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发表时间：
2010-02
影响因子：
6.2
通讯作者：
A. Majchrowski;S. Kłosowicz;L. Jaroszewicz;M. Świrkowicz;I. Kityk;M. Piasecki;M. Brik
中科院分区：
文献类型：
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作者：
A. Majchrowski;S. Kłosowicz;L. Jaroszewicz;M. Świrkowicz;I. Kityk;M. Piasecki;M. Brik
采用顶部籽晶溶液生长法生长了不同浓度Yb3+的NdAl3(BO3)4单晶。在室温下记录了生长样品的吸收光谱，并用标准的Judd-Ofet理论进行了分析。研究了Yb3+浓度对Nd3+吸收性能的影响。随着Yb3+浓度的变化，Nd3+振子强度的变化表明Yb-ND能量传递在吸收光谱的形成中起着重要的作用。根据吸收光谱，我们在532 nm处照射所研究的晶体，观察双光子吸收(TPA)的变化。我们观察到TPA随照射激光功率的增加而显著增加，且与Yb含量成正比。
NdAl3(BO3)4single crystals with different concentrations of Yb3+were grown using the top seeded solution growth method. The absorption spectra of the grown samples were recorded at room temperature and analyzed using the standard Judd–Ofelt theory. Influence of Yb3+concentration on the Nd3+absorption properties was studied. Variation of the Nd3+oscillator strengths with changing Yb3+concentration suggests significant role of the Yb–Nd energy transfer in the formation of the absorption spectra. Following the absorption spectra we illuminated the investigated crystals at 532nm absorption line to observe the changes of the two-photon absorption (TPA). We observed substantial increase of the TPA with the increased power of the illuminating laser which was proportional to the Yb content.