摘要
通过利用经Grober发展的Bethe模型 ,计算了透射式近场光学显微镜探针针尖附近及进入样品后的光场分布 ,研究了它的横向分辨率、透射深度、透射系数等问题 .模拟在光学近场激发下生物荧光分子成像的过程 ,研究了荧光分子的极化方向和入射光偏振方向对信号收集的影响 ,发现荧光图像是偏振极性和荧光分子极性共同作用的结果 .
The light intensity distribution near the fiber probe of the Transmission Scanning Near Field Optical Microscopy(SNOM) was calculated by the model of R.D.Grober.The resolution,transmission depth and transmittance of the light intensity were discussed.The imaging process of excited biological fluorescent molecules was simulated,and it was found that the dipole direction of fluorescent molecules and the polarization of incident light influenced the detected signals.Both the polarization direction of incident light and the dipole direction of fluorescent molecules would affect the fluorescent molecules imaging.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2000年第10期1959-1964,共6页
Acta Physica Sinica
基金
国家自然科学基金!重大项目 (批准号 :19890 3 80 7)
国家自然科学基金!青年基金项目 (批准号 :6980 80 0 3 )资助的课题&&
关键词
光场分布
透射式
扫描近场光学显微镜
探针
scanning near field optical microscopy, light intensity distribution, fluorescent molecules imaging