研究生: |
徐裕程 Hsu, Yu-Cheng. |
---|---|
論文名稱: |
多層抗反射膜於兆赫波頻段之製作 Fabrication of broadband multilayer antireflection coating in THz region |
指導教授: |
張存續
Chang, Tsun-Hsu |
口試委員: |
潘犀靈
Pan, Ci-Ling 嚴大任 Yen, Ta-Jen |
學位類別: |
碩士 Master |
系所名稱: |
理學院 - 物理學系 Department of Physics |
論文出版年: | 2017 |
畢業學年度: | 105 |
語文別: | 中文 |
論文頁數: | 58 |
中文關鍵詞: | 抗反射鍍膜 、多層抗反射鍍膜 、調製等效折射率 、填充率與週期寬度 |
外文關鍵詞: | broadbandmultilayerantireflection, THz, subwavelengthsilicon, holesizeandperiod |
相關次數: | 點閱:3 下載:0 |
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我們提出了一個製造寬頻帶抗反射(AR)塗層的新方法,
並使反射的影響達到最小。我們採用二項式多斷阻抗匹配方法去確定
每個匹配層的厚度和折射率,而這些層可以通過亞波長矽
通孔陣列製作全介電可調變折射率的超材料並進一步實現抗反射鍍膜於於THz頻段中。根據填充率,孔徑尺寸和周期寬度,有效地調製近似線性
變化的等效折射率。 基於此方案,我們為被廣泛使用的矽晶片設計了
10層AR塗層。我們設計的AR塗層厚度是1656μm且形式是矽晶片雙面成,能夠將THz透射率不管是TE偏振或TM偏振THz光束的提升到
95.00%以上 , 而入射角度只要低於50 o仍有不錯的穿透率表現。
A novel approach of fabricating a broadband anti-reflection (AR) coating is proposed to minimize the effect of unwanted reflections. The binomial multi-section transformer is employed to efficiently determine the thickness and the refractive index of each matching layer, while those layers can be further realized by manufacturing the subwavelength silicon through-hole arrays as an all-dielectric gradient index metamaterial with broadband THz operation. Depending on the fill-factor, hole-size and period, the effective index was linearly modulated in THz region. Based on this scheme, we design a ten-layer AR coating for widely used silicon wafer. The designed AR coatings are double-sided integrated with a 1656-μm-thick silicon wafer, which is able to enhance the overall THz transmission to higher than 95.00% from 0.250 THz to 0.919 THz for either TE-polarized or TM-polarized THz beam incident from arbitrary angle below 50o.
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