摘要
研究了Ｙｂ∶ＦＡＰ晶体的光谱特性．用９８０ｎｍ的ＩｎＧａＡｓ激光二极管激发测量了Ｙｂ∶ＦＡＰ晶体的偏振发射光谱和荧光寿命，结合晶体的偏振吸收光谱，采用对易法计算了晶体的吸收截面和发射截面．讨论了Ｙｂ３＋掺杂浓度对Ｙｂ∶ＦＡＰ的光谱参数的影响．在较低掺杂浓度下，Ｙｂ∶ＦＡＰ晶体π偏振方向在９０３ｎｍ处的吸收截面为１０×１０－２０ｃｍ２，在１．０４３μｍ处的发射截面为５．８×１０－２０ｃｍ２，激光上能级的荧光寿命为１．１ｍｓ．
The spectroscopy
performance of Yb doped calcium fluorapatite (Yb∶FAP) was assessed by measuring
polarization absorption spectra and polarization emission spectra and fluorescence lifetime of
Yb∶FAP.The emission cross section has been evaluated using the absorption cross section
and principle of reciprocity.The optimal doping level was determined by studying of
spectroscopic performance parameters of Yb∶FAP with different doped concentration.The π
polarization absorption and emission cross sections of Yb 3+ in FAP are found to be
substantially larger than those of other Yb doped media.Favorable spectroscopic
characteristics parameters indicated:Yb∶FAP crystal should prove visible for many diode
pumped solid state laser application to low and medium power in near future.
出处
《光子学报》
EI
CAS
CSCD
1999年第7期634-637,共4页
Acta Photonica Sinica
基金
国家自然科学基金
国家高技术863-416资助项目
关键词
Yb:FAP晶体
偏振
吸收光谱
发射光谱
Yb∶
FAP crystal
Polarization absorption spectra
Polarization emission spectra
Absorption cross
section
Emission cross section
Doping level
