AF/PSTM图像分解方法及其数值模拟结果  

The Method for Separating Image of the Bent Optical Fiber Tip Resonated AF/PSTM

作　　者：吴世法[1] 潘石[1] 章健[1] 刘伟[1] 王景芝[1] 黄玉起[1] 

机构地区：[1]大连理工大学物理系,辽宁大连116023

出　　处：《中国工程科学》2001年第8期33-36,共4页Strategic Study of CAE

基　　金：国家自然科学基金资助项目 ( 6 0 0 0 70 1);科学技术部和中国分析测试协会仪器功能开发基金资助项目 (GN -99-15 )

摘　　要：介绍 1996年申请的一项发明专利———光纤尖“共振原子力 /光子扫描隧道显微镜 (AF/PSTM)”图像分解方法。该方法用入射角以光纤尖轴线为π对称的光束照明样品消假像 ,在AF/PSTM双功能弯光纤尖共振频率条件下 ,采用等尖至样品平均间距 (即等振幅 )扫描或等光子隧道信息平均强度扫描两种模式成像 ,分解样品光学图像和形貌图像。用最简单的PSTM两介质模型推导了近似的图像分解的解析表达式 。An invented patent about the method for separating image of Atom Force/Photon Scanning Tunneling Microscope (AF/PSTM) and its numerical simulation results are introduced. In AF/PSTM π symmetry lighting beams were used for eliminating false image. The AF/PSTM bi functional tip is made of bent optical fiber and works on constant amplitude resonance.Δ Ι CD and Δ I CI are AC information of photon tunnel of AF/PSTM under constant average distance ( →A )scanning mode (constant amplitude mode) and constant average intensity scanning mode respectively. Both (Δ I CD / I CD ) 2 and (Δ I CI ) 2 are approximately linear with refractive index ( n 1) of the sample. Results of the numerical simulation illustrate that the method for separating image of AF/PSTM is efficient. AF/PSTM constant average distance ( →A ) scanning mode (constant amplitude mode) has more advantages than that of constant average intensity one, such as the better response sensitivity of refractive index of the sample, and ability of getting three images of transmisitivity, refractive index and morphology of sample simultaneously. Some excellencies of this method are listed at last. [

关 键 词：AF/PSTM 图像分解 数值模拟 弯光纤尖 共振原子力显微镜 光子扫描遂道显微镜 

分 类 号：TN16[电子电信—物理电子学]