本論文是利用受挫式內部全反射法及激發表面電漿波組態(Kretschmann組態和Otto組態)對食物中氯化鈉之表面電漿波共振角之研究。 本論文是採用電腦模擬,我們採用632.8(nm)的紅光雷射作為入射光源,分別對Kretschmann組態(磷化鎵稜鏡-金屬-氯化鈉)及Otto組態(磷化鎵稜鏡-氯化鈉-金屬)中的金屬薄膜厚度變化,進行研究。 研究結果得知,在Kretcschmann組態中使用銅薄膜厚度25(nm)、銀薄膜厚度45(nm)、金薄膜厚度28(nm);在Otto組態中使用銅薄膜厚度70(nm)、銀薄膜厚度120(nm)、金薄膜厚度77(nm)時,可得到表面電漿波共振角之吸收深度較佳。
This research used frustrated total internal reflection methods and stimulated surface plasma waves configuration (Kretschmann configuration and Otto configuration) to sodium chloride resonance angle of food. This research is based on computer simulation. We used 632.8 (nm) He-Ne laser as the incident source to stimulate surface plasma waves of Kretschmann configuration (gallium phosphide prism - metal - sodium chloride) and of Otto configuration (gallium phosphide prism - sodium chloride - metal ). From the results of the computer simulation: while in Kretschmann configuration, we could find out that we would get a better depth of resonance angle when surface plasma wave copper film thickness is 25(nm) , silver film thickness is 45 (nm), gold film thickness is 28(mm). And while in Otto configuration, we could find out that we would get a better depth of resonance angle when surface plasma wave copper film thickness is 70 (nm), silver film thickness is 120 (nm), gold film thickness is 77 (nm).