基于铒离子下转换绿色荧光的温度传感器  

Optical Temperature Sensor Based on Downconverted Green Fluorescence of Er Ions

作　　者：袁宁 刘大宇 孙宏雪 张德龙[1,2] 

机构地区：[1]天津大学精密仪器与光电子工程学院,天津300072 [2]天津大学教育部集成光电子重点实验室,天津300072 [3]天津中德应用技术大学基础课部,天津300350

出　　处：《天津大学学报（自然科学与工程技术版）》2018年第3期325-330,共6页Journal of Tianjin University：Science and Technology

基　　金：国家自然科学基金资助项目(61377060;61628501;61077039;50872089)~~

摘　　要：本文研究了基于Er^(3+)掺杂SrGdGa_3O_7晶体在488,nm氙灯泵浦下的下转化绿色荧光530,nm和550,nm强度比的温度传感器的温度特性.实验装置是由1台氙灯、1个平凸透镜、3个滤波片和1个硅光电池等元器件组成.Er^(3+)掺杂SrGdGa_3O_7(Er:SrGdGa_3O_7)晶体在光功率仅为5,m W的488,nm氙灯泵浦下实现温度表征.在温度296~380,K区间,530,nm和550,nm波段荧光强度比的相对灵敏度为6.4×10^(-3)~10.6×10^(-3),K^(-1).通过光电池测量方法重复上述实验,实验结果与光谱仪测量方法的一致.研究结果表明,Er:SrGdGa_3O_7在温度传感方面是一种有应用前景的基质材料.This paper presents an optical temperature sensor based on the thermal effect of fluorescence intensity ratio of 488-nm downconverted green 530-and 550-nm emissions of Er^（3＋）-doped SrGdGa_3O_7（Er：SrGdGa_3O_7）single crystal.To achieve that,a simple experimental setup has been developed that consists of a Xe lamp,a plano-convex lens,three interference filters and a Si-photocells.The sensor performance can be characterized just under the excitation of（5,m W）488,nm light.The temperature sensitivity of fluorescence intensity ratio of the 530 nm and 550 nm emissions is 6.4×10^（-3）—10.6×10^（-3）,K^（-1） within the considered temperature range 296—380 K.In addition,the experiments were repeated using a photocell and the consistent results of temperature characteristics were obtained.Those results indicate that the Er：SrGdGa_3O_7 single crystal is a promising host material for optical temperature sensing.

关 键 词：荧光强度比 下转换绿色荧光 Er:SrGdGa3O7单晶 温度特性 

分 类 号：TH741[机械工程—光学工程]