1. Spectroscopic and thermal properties of Cr,Yb:YAG crystal
- Author
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Xu, Xiaodong, Zhao, Zhiwei, Wang, Honghua, Song, Pingxin, Zhou, Guoqing, Xu, Jun, and Deng, Peizhen
- Subjects
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SPECTRUM analysis , *FLUORESCENCE , *TEMPERATURE , *LASERS - Abstract
The absorption spectra, emission under 940 nm excitation by laser diode, and fluorescence lifetimes of as-grown and annealed Cr,Yb:YAG crystal have been investigated at room temperature. The increase of absorption coefficients at 941 and 1030 nm and the quenching of Yb3+ emission intensity and fluorescence lifetime after annealing are due to the increase of the concentration of Cr4+ ions. The data of thermal expansion and specific heat of the crystal have been measured. The thermal expansion coefficient is
α=8.71×10−6 /K. The specific heat is 89.9 cal/mol K at 320.5 K. [Copyright &y& Elsevier]- Published
- 2004
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