Ho^(3+),Tm^(3+)∶LuLiF_4晶体反斯托克斯荧光谱对光学制冷的加强  

Effect of the Anti-Stokes Fluorescence Spectrum of Ho^(3+),Tm^(3+)∶LuLiF_4 Crystal on Optical Cooling

作　　者：余龙[1,2] 高彦伟[1,2] 

机构地区：[1]湖北久之洋红外系统股份有限公司,湖北武汉430223 [2]华中光电技术研究所-武汉光电国家实验室,湖北武汉430223

出　　处：《光学与光电技术》2017年第3期91-94,共4页Optics & Optoelectronic Technology

基　　金：科技部国际科技合作项目(2012DFR10180)资助项目

摘　　要：为了研究Ho^(3+),Tm^(3+)共掺引起的能量传递效应对光学制冷效果的加强作用,采用中心波长为2 069nm的π偏振激光负调谐泵浦Ho^(3+)∶LuLiF_4晶体和Ho^(3+),Tm^(3+)∶LuLiF_4晶体,通过收集负泵浦产生的荧光,并分析计算得出Tm^(3+),Ho^(3+)共掺晶体较单掺Ho^(3+)的晶体光学制冷中效率提高3.47倍,Ho^(3+),Tm^(3+)共掺晶体的能量传递作用对光学制冷效率有一定的加强作用。In order to research the effect of the co-doped Ho3＋ ,Tm3＋ crystal energy transform on optical cooling, an experi- ment of negative tuning pump is tested. The center wavelength of 2 069 nm n-polarization has been used to pump the Ho3＋ ： LuLiF4 crystal and the Ho3＋ , Tm3＋ ：LuLiF4 crystal. The fluorescence of the crystal has been collected. By comparing the fluorescence of the Ho3＋ ：LuLiR crystal and the Ho3＋ ,Tm3＋ ： LuLiF4 crystal, the consequence of the co-doped crystal opti- cal cooling effect being larger than 3.47 of single-doped crystal is obtained. The result of energy transform effect enhancing the optical cooling is acquired.

关 键 词：光学制冷 反斯托克斯 荧光光谱 能量传递 LuLiF4晶体 Ho3+掺杂 

分 类 号：TN248.1[电子电信—物理电子学]