本文探討客/主型高分子的電光特性，將含有氟原子的電荷轉移分子Wu182與主體高分子PMMA溶於氯仿，並以混入PMMA的DR1作為比較樣品。將樣品Wu182/PMMA與DR1/PMMA以旋轉塗佈法製成薄膜，在高於薄膜樣品的玻璃轉變溫度的情況下進行極化，同時確認二倍頻訊號的產生。極化後的薄膜樣品置於馬赫-詹德干涉儀其中一臂，藉由附加於高分子薄膜的調變電壓造成的干涉儀相位變化來量測電光係數。從實驗中觀察調變頻率對電光效應造成的影響，實驗結果顯示Wu182具有高的非線性光學效應，而在頻率6 kHz以上可量得真實的電光係數r13，其大小為2.620 pm/V。

In this study, we focus on the electric optical characteristic of guest/host polymer system. The charge transfer chromophore Wu182 which contain fluorine atom in it was mixed with polymer PMMA and solved in chloroform, while DR1/PMMA served as reference sample. The wu182/PMMA and DR1/PMMA thin films were produced by spin coating. The thin film was poled at the temperature above glass transition temperature until the second harmonic generation signal was present. The poled thin film was placed in one arm of Mach-Zehnder interferometer. Voltage modulation applied to the polymer films can cause phase changes in the interferometer from that we estimate the electro-optic coefficient. From our experiments, we found that modulating frequency had significant influence on the electro-optic effect. The result shows that Wu182 possess large nonlinear optical coefficient. The valid electro-optic coefficient r13 was obtained to be 2.620 pm/V when the frequency was above 6 kHz.

摘要..............................................................................................i
目錄.............................................................................................ii
表目錄........................................................................................iv
圖目錄.........................................................................................v
第一章 序論…………………………………………………...1
1.1 進展………………………………………………..........1
1.2 非線性光學高分子種類………………………………..2
1.3 待測樣品………………………………………………..5
第二章 原理…………………………………………………...6
2.1 非線性光學與二倍頻效應……………………………..6
2.2 折射率橢球……………………………………………..7
2.3 電光效應………………………………………………10
2.4 極化……………………………………………………11
2.5 極化薄膜的電光係數…………………………………12
2.6 非中心對稱……………………………………………13
2.7 電光係數的量測技術…………………………………14
2.8 馬赫-詹德干涉儀的量測原理………………………...15
2.9 縱向調變與橫向調變…………………………………17
2.10 比爾定律………………………………………….….18
第三章 實驗…………………………………………….……19
3.1 基板清潔…………........................................................19
3.2 樣品配製........................................................................19
3.3 樣品極化........................................................................20
3.4 觀察二倍頻訊號............................................................21
3.5 電光係數的量測............................................................22
第四章 結果與討論.................................................................25
4.1 Wu182/PMMA薄膜與DR1/PMMA薄膜
的結果比較.....................................................................25
4.2電光係數與頻率的關係.................................................27
第五章 結論.............................................................................29
參考文獻...................................................................................30
附表...........................................................................................37
附圖...........................................................................................38

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