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標題: | 金屬薄膜十字孔洞陣列之異常穿透現象與紅外線熱發射器之特性研究 The Extraordinary Transmission through a Metal Film Perforated with Cross Shaped Hole Arrays and the Characteristics of Infrared Thermal Emitter |
作者: | Chia-Yi Chen 陳家億 |
指導教授: | 李嗣涔(Si-Chen Lee) |
關鍵字: | 紅外線熱發射器,金屬薄膜異常穿透現象, Infrared thermal emitter,Extraordinary transmission through a metal film, |
出版年 : | 2007 |
學位: | 碩士 |
摘要: | 本文在理論及實驗上計算並量測出在週期排列的金屬孔洞上,其表面電漿子的能帶圖,且經由極化紅外光量測在銀薄膜上以正方形陣列排列之不同大小的十字孔洞的異常穿透現象,觀察在孔洞周圍的局部電荷振盪所造成的影響。也同時討論及比較不同孔洞形狀的週期陣列之穿透頻譜。另外,藉由量測具有不同中間層二氧化矽厚度之表面電漿紅外線熱發射器的發射頻譜及能階圖,可觀察在上、下 銀/二氧化矽介面的表面電漿子之間耦合的現象,並量測出其耦合長度。此耦合效應造成熱發射器的頻譜產生紅位移的現象。更進一步地,製作出在上和下層具有不同週期性結構之紅外線熱發射器,並量測其發射頻譜。在適當的上、下週期性結構設計之下,可觀察到由下層週期結構所造成的表面電漿共振產生的發射頻譜。 The band diagram of surface plasmons (SPs) on a periodic array of metal holes is investigated in theory and experiment. The extraordinary transmission through a silver film perforated with various sized cross shaped hole arrays in a square lattice is measured by polarized infrared light to observe the influence of localized charge oscillations around the hole. The comparison of transmission spectra of periodic hole arrays with different hole shape is also discussed. Besides, the emission spectra and energy dispersions of infrared plasmonic thermal emitters with different intermediate SiO2 thickness are measured to investigate the coupling of SPs between the top and bottom Ag/SiO2 interface and the coupling length is determined. This coupling effect results in the red shift of emission peak of thermal emitter. Furthermore, the plasmonic thermal emitters with different top and bottom periodic hole structures are fabricated and the emission spectra are measured as well. With appropriate top and bottom periodic hole structures arrangement, the emission peaks from SPs resonance in the bottom periodic structure are observed simultaneously. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/29781 |
全文授權: | 有償授權 |
顯示於系所單位: | 電子工程學研究所 |
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