悬臂式光纤探针的传光特性研究  

The Study on Transmission Properties of Cantilever Probe

作　　者：薛春荣[1] 祝生祥[1] 肖志刚[1] 

机构地区：[1]同济大学Pohl固体物理研究所,上海200092

出　　处：《量子光学学报》2003年第2期84-87,共4页Journal of Quantum Optics

基　　金：国家自然科学基金 (6 98770 14 )

摘　　要：根据标量波动方程 ,运用高斯近似法 ,从理论上说明光信号在悬臂式光纤探针中的传输特性和能量损耗 ,并用自制探针的具体数据 ,求出由于弯曲造成的光场偏移量 ;用实验方法测量悬臂式探针的传输效率随光纤圆锥角的变化关系 ,作出传输效率曲线 ,理论分析和实验测量相吻合。Transmission properties of cantilever probe are discussed in this paper. The transmission efficiency of the cantilever probe is measured. The cu rve of transmission efficiency versus coning angle is given. By the scalar wave equation and Gaussian approximation, transmission properties of this kind of fib er are analyzed and the power losses caused by the binding are also calculated. Fro m the experiments and analysis, it could be come to the conclusion that the bigg er the taper angle, the higher the transmission efficiency.

关 键 词：悬臂式光纤探针 传光特性 弯曲损耗 传输效率 扫描探针显微镜 SPM 光场偏移量 

分 类 号：TN253[电子电信—物理电子学] TH742[机械工程—光学工程]