Near-field imaging of the interactions of evanescent fields

• Main Authors: Chin Sung Lin, 林金松
• Other Authors: Hai Pang Chiang
• Format: Others
• Language: zh-TW
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/17012470111052025502

碩士 === 國立臺灣海洋大學 === 光電科學研究所 === 92 === The principal goal of present thesis is to study the near-field interactions between evanescent fields at the TIR interface and the evanescent fields generated by the total internal reflection inside the prism. We use light sources with different wavelengths, polarization directions, and different incident directions in our experiment. By changing the experimental conditions, the corresponding period and intensity of interference patterns of evanescent fields were observed to realize the degree of interfering influence of evanescent fields. The near-field images of interactions of evanescent fields provide the novel method for the application of near-field optics. The main instrumentation of a tapping-mode tuning fork force sensing and short fiber probe near-field scanning optical microscope (TMTF-NSOM) are used to measure the interactive signal of evanescent fields at the TIR interface, the comparisons between experimental and calculated results are analyzed and discussed as well.