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K⁺，Yb³⁺：BaWO₄晶体光谱性能研究

Spectrum Characteritics of K⁺;Yb³⁺;BaWO₄ Crystals

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【Author】 ZANG Jing-cun~1 XIE Li-yan~1 ZOU Yu-lin~1 LIU Guo-qing~2 L(?) Chao~1 LIU Yu-long~2 FENG Bao-hua~2 CFIEN Yu-jin~4 (1.College of Materials Science and Engineering,Beijing University of Technology,Beijing 100022,China;2.College of Applied Science,Beijing University of Technology,Beijing 100022,China;3.Key Laboratory of Optical Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100080,China;4.Fujiang Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China)

【机构】北京工业大学材料科学与工程学院；北京工业大学应用数理学院；中国科学院物理所光物理开放实验室；中国科学院福建物质结构研究所；

【摘要】为提高Yb³⁺离子在BaWO₄晶体中的掺入量,采用了双掺K⁺离子的方法,增大Yb³⁺离子的分凝系数,使K⁺（x（K⁺）=0.01）,Yb³⁺(x(Yb³⁺)=0.02):BaWO₄晶体在977 nm处的吸收系数达到α=0.494 cm^-1.研究了波长为930 nm的LD激光抽运时相应于Yb³⁺离子²F_5/2→²F_7/2跃迁的960～1 020 nm的荧光光谱,其在1 005 nm处的发射截面σ_?=6.286 pm²,荧光寿命为0.4 ms.实验表明K⁺,Yb³⁺:BaWO₄是一种新型近红外激光晶体。更多还原

【Abstract】 To increase concentration of yb³⁺-ions in BaWO₄ crystals,co-doped K⁺-ions method were adopted.Absorption coefficient of K⁺（x（K+^）=0.01）,Yb³⁺(x(Yb³⁺)=0.02):BaWO⁴ crystals isα= 0.494 cm^-1 at 977 nm.Fluorescence spectra of Yb³⁺-ions from 960 nm to 1 020 nm,corresponding to transition ²F_5/2→²F_7/2 was investigated.Emission cross section at 1 005 nm is 6.286×10^-20cm²,livetime is 0.4 ms.The experimental result shows that K⁺,Yb³⁺:BaWO₄ is a potential laser crystal.更多还原