光学学报, 2005, 25 (3): 429, 网络出版: 2006-05-22
Yb∶YAG晶体的红外闪烁特性
Infrared Scintillation Properties of Yb∶YAG Crystal
光电材料 Yb∶YAG晶体 IR闪烁性能 光产额 浓度猝灭 opto-electronic materials Yb∶YAG infrared scintillation properties light yield concentration quenching
摘要
用脉冲电子束激发测量了不同Yb3+掺杂浓度的Yb∶YAG晶体的红外(IR)闪烁发光性能。Yb∶YAG晶体的IR闪烁发光具有高的光产额和长的衰减时间,但存在浓度猝灭效应和温度依赖关系。Yb∶YAG晶体的IR闪烁性能还与晶体品质有关,相同掺杂浓度的Yb∶YAG晶体,品质优异的会获得更高的光产额。这一初步的研究成果表明,部分掺Yb3+晶体有可能用于医学成像装置。
Abstract
Infrared (IR) scintillation properties of Yb∶YAG crystals with different Yb3+ doping level were measured by using pulsed electron beam. At room temperature the light yield of Yb∶YAG crystal is high and decay time is long. The dependence of light yield and decay time on Yb3+ doped concentration and temperature were demonstrated, and concentration quenthing was observed. The scintillation properties of Yb∶YAG were still affected by crystal quality. These measurement results suggest that some Yb3+-doped crystals should be possible for application in medical imaging.
杨培志, 邓佩珍, Belogurov S. Yb∶YAG晶体的红外闪烁特性[J]. 光学学报, 2005, 25(3): 429. 杨培志, 邓佩珍, Belogurov S. Infrared Scintillation Properties of Yb∶YAG Crystal[J]. Acta Optica Sinica, 2005, 25(3): 429.