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.
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