O432.1 95020714模块式组合光学测量系统—EG and G GAMMA(伽马)=Modle compositive optical measuringsystem[刊,中]/陈佳圭(中科院物理所.北京)∥现代科学仪器.—1994,(2).—48—49介绍了分光辐射测量系统,空间辐射计系统,激光辐射计...O432.1 95020714模块式组合光学测量系统—EG and G GAMMA(伽马)=Modle compositive optical measuringsystem[刊,中]/陈佳圭(中科院物理所.北京)∥现代科学仪器.—1994,(2).—48—49介绍了分光辐射测量系统,空间辐射计系统,激光辐射计系统,辐射/光度计系统,辐射光学系统等的基本概况.图1(李瑞琴)展开更多
The Ho^(3+)/Pr^(3+) co-doped Na YF4 single crystals with various Pr^(3+) concentrations and constant Ho^(3+) molar percentage of ~1% were grown by an improved Bridgman method.Compared with the Ho^(3+) single-doped Na ...The Ho^(3+)/Pr^(3+) co-doped Na YF4 single crystals with various Pr^(3+) concentrations and constant Ho^(3+) molar percentage of ~1% were grown by an improved Bridgman method.Compared with the Ho^(3+) single-doped Na YF4 crystal,an obviously enhanced emission band at 2.85 μm is observed under 640 nm excitation.The Judd-Ofelt strength parameters(?2,?4 and ?6) are calculated,the radiative transition probabilities(A),the fluorescence branching ratios(β) and the radiative lifetime(τrad) are obtained in the meantime.The energy transfer from Pr^(3+) to Ho^(3+) and the optimum fluorescence emission of Ho^(3+) ions around 2.85 μm are investigated.Moreover,the maximum emission cross section of above samples at 2.85 μm is calculated to be 0.72×10^(-20) cm2 for the Na YF4 single crystal with Ho^(3+) molar percentage of 1% and Pr^(3+) molar percentage of 0.5% according to the measured absorption spectrum.All results suggest that the Ho^(3+)/Pr^(3+) co-doped Na YF4 single crystal may have potential applications in mid-infrared lasers.展开更多
文摘O432.1 95020714模块式组合光学测量系统—EG and G GAMMA(伽马)=Modle compositive optical measuringsystem[刊,中]/陈佳圭(中科院物理所.北京)∥现代科学仪器.—1994,(2).—48—49介绍了分光辐射测量系统,空间辐射计系统,激光辐射计系统,辐射/光度计系统,辐射光学系统等的基本概况.图1(李瑞琴)
基金supported by the National Natural Science Foundation of China(No.51272109)the Natural Science Foundation of Ningbo City(No.201401A6105016)the K.C.Wong Magna Fund in Ningbo University
文摘The Ho^(3+)/Pr^(3+) co-doped Na YF4 single crystals with various Pr^(3+) concentrations and constant Ho^(3+) molar percentage of ~1% were grown by an improved Bridgman method.Compared with the Ho^(3+) single-doped Na YF4 crystal,an obviously enhanced emission band at 2.85 μm is observed under 640 nm excitation.The Judd-Ofelt strength parameters(?2,?4 and ?6) are calculated,the radiative transition probabilities(A),the fluorescence branching ratios(β) and the radiative lifetime(τrad) are obtained in the meantime.The energy transfer from Pr^(3+) to Ho^(3+) and the optimum fluorescence emission of Ho^(3+) ions around 2.85 μm are investigated.Moreover,the maximum emission cross section of above samples at 2.85 μm is calculated to be 0.72×10^(-20) cm2 for the Na YF4 single crystal with Ho^(3+) molar percentage of 1% and Pr^(3+) molar percentage of 0.5% according to the measured absorption spectrum.All results suggest that the Ho^(3+)/Pr^(3+) co-doped Na YF4 single crystal may have potential applications in mid-infrared lasers.
