【摘 要】
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Optic parameters, such as the probabilities of radiative and non-radiative transition and the crossrelaxation probability between Yb3 and Ho3 ions in Yb,Ho:YAG crystal, are calculated on the basis of Judd-Ofelt and Dexter theories. The energy up-convers
【机 构】
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OptoelectronicDivision,ChinaInstituteofMetrology,Hangzhou310034,DepartmentofOpticalEngineering,Zheji
【出 处】
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ChineseOpticsLetters
论文部分内容阅读
Optic parameters, such as the probabilities of radiative and non-radiative transition and the crossrelaxation probability between Yb3 and Ho3 ions in Yb,Ho:YAG crystal, are calculated on the basis of Judd-Ofelt and Dexter theories. The energy up-conversion process is analyzed by solving the transition rate-equations. The results show that (1) the intensity of the green fluorescence relates to the square of the concentration of the active ions; (2) the intensity increases with the concentration of sensitive ions as well, but the increasing rate goes rather too slow; (3) the efficiency of the energy up-conversion relates with the speed of the energy up-conversion and the quantum efficiency of the transiting from upper levelto lower level.
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