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研究生：	賴建宇 Lai, Jian-Yu
論文名稱：	表面電漿效應產生增強穿透次波長狹縫的光波之侷限 Confinement of enhanced transmission light through a sub-wavelength slit due to surface plasma effect
指導教授：	陳寬任 Chen, Kuan-Ren
學位類別：	碩士 Master
系所名稱：	理學院 - 光電科學與工程研究所 Institute of Electro-Optical Science and Engineering
論文出版年：	2006
畢業學年度：	94
語文別：	英文
論文頁數：	72
中文關鍵詞：	表面電漿子、次波長、有限差分時域法
外文關鍵詞：	Surface plasmon, Sub-wavelength, FDTD
相關次數：	點閱：176 下載：1
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The enhancement of light transmission through sub-wavelength slit is an interesting and important recent discovery in plasmonic nano-photonics. This is studied with our newly developed two dimensional simulation code of finite-difference time-domain method. The simulations verify the enhanced transmission that far exceeds the diffraction limit and help to understand in depth the resultant beaming of light that will be important in nano-optical applications. In fact, we have found some interesting physics for the enhanced transmission in addition to surface plasmon.
The beaming of light is found due to the interference of the first order scattered light with the zeroth order transmitted light and is divergent with a finite angle. By proposing the interference between the zeroth and zeroth orders transmission light, we found the beamed light can be well confined. The dynamics and interesting physics of our new founding will be discussed.

                                             Page
Abstract........................................I
Acknowledgements...............................II
Contents.......................................IV
List of Tables and Figures.....................VI

Chapters
1. INTRODUCTION.................................1
   1.1  Surface Plasmon Polaritons   
        (SPP)...................................1
   1.2  Surface Plasmon Sub-wavelength Photonic  
        Applications............................2
   1.3  Phenomena that Light Pass through 
        a Sub-wavelength Slit...................3
   1.4  Thesis Organization.....................5
2. SIMULATION METHOD............................6
   2.1  System..................................6
   2.2  Simulation Model........................8
   2.3  The Yee Algorithm......................10
   2.4  Boundary Conditions....................16
   2.5  Stability and Error Analysis...........27
   2.6  Parallel Computation...................34
   2.7  Hierarchical Data Format 5.............38
3. RESULTS AND DISCUSSION 
    IN THE MICROWAVE REGION....................43
   3.1  Dynamics of the Light Transmission and 
        Dual Angles for a Given Wavelength.....43
   3.2  De-coherence and Re-coherence of the  
        Electric and Magnetic Fields near the 
        Exit...................................50
   3.3  Effect of the Exit Groove Width 
        on the Enhanced Transmission...........55
4. RESULTS AND DISCUSSION
    IN THE VISIBLE LIGHT REGION................60
   4.1  Confinement of Enhanced Transmission 
        Light through a Sub-wavelength Slit....60
   4.2  Physical Explanation...................65
5. CONCLUSION..................................71
   5.1  Summary................................71
   5.2  Further Work...........................72

Reference.......................................i
Abbreviations and Glossary....................iii

                                    

Reference

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校內：2009-08-31公開
校外：2009-08-31公開

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