摘要
研究了掺铒的纳米相氟氧化物玻璃陶瓷(Er(3):FOV)的红外量子剪裁现象,测量了红外和可见的Er(3):FOV的荧光光谱.结果发现光激发2H11/2能级的4I13/2→4I15/2荧光跃迁的近似量子剪裁效率已达约186.28%.计算了有关的无辐射弛豫速率、自发辐射速率和能量传递速率,分析了有关的能量传递动力学过程,发现速率为371000s-1的{2H11/2→4I9/2,4I15/2→4I13/2}交叉能量传递是导致光激发2H11/2能级有高量子剪裁效率的主要原因.首次报道了Er(3):FOV的可见激发的三光子和浅紫外激发的四光子红外量子剪裁现象.
The article reports the infrared quantum cutting phenomenon of the Er-doped nanophase oxyfluoride vitroceramics（Er（3）：FOV）.The infrared and visible fluorescence spectra of Er（3）：FOV are measured carefully.It is found that the approximate quantum cutting efficiency of the 1543.0 nm 4I13/2→4I15/2 fluorescence,when the 2H11/2 levels are excited,is about 186.28%.The relative nonradiative relaxation rate and spontaneous emission rate and energy transfer rate are calculated.The relative energy transfer dynamics is analyzed.It is found that the { 2H11/2→4I9/2,4I15/2→4I13/2 } energy transfer channel,with the rate of 371000 s-1,is the main reason for 2H11/2 energy level to have high quantum cutting efficiency.To our best knowledge,the present article for the first time reports Er（3）：FOV to have an effective three-photon infrared quantum cutting excited by visible light and a four-photon infrared quantum cutting excited by near-violet light.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2010年第7期5091-5099,共9页
Acta Physica Sinica
基金
国家自然科学基金(批准号:10674019)资助的课题~~
