摘要
运用麦克斯韦方程组和波恩-黄昆(Born-Huang)近似,对几种典型膜材料的三元混晶(TMC)膜中的表面激子极化激元进行了研究和数值计算。结果表明:TMC膜中存在两支激子极化激元表面模,与二元材料定性类似,但定量明显不同;TMC膜两支表面模频率和分裂能均随组分非线性变化;非线性程度与混晶膜厚(或频率)有关,在某些膜厚(或频率)下,可呈现非单调性。
Surface exciton polaritons in ternary mixed crystals（TMCs） are investigated by using Maxwell′sequation group in the Born-Huang approximation.The numerical results for some typical systems show that there are two branches of surface exciton polariton modes in TMCs as well as in binary crystals.The dispersion characteristics of surface exciton polaritons in TMCs depend strongly on the TMC composition.The variations of the mode frequencies and splitting energies of two branches of surface polaritons with the composition are non-linear.The non-linearity relates to the film width（or wave-vector）,and it could be non-monotonic at some film widths.
出处
《光电子．激光》
EI
CAS
CSCD
北大核心
2010年第7期1026-1030,共5页
Journal of Optoelectronics·Laser
基金
国家自然科学基金资助项目(10764003)
