臺灣博碩士論文加值系統

本論文中，我們利用經極化後的電光高分子作為感測器來製作外部式電光探測系統，並使用二極體固態雷射作為激發光源使預極化後的電光高分子產生光致異構化反應，可使電光高分子保持甚至是提升高分子非中心對稱性的分佈。此方法可使電光係數增加，並提升電光探測系統的靈敏度。 實驗中我們證實此方法可以提升電光感測系統靈敏度至少兩次。

In this thesis, we propose an optical sensitivity-enhanced external electro-optic (EO) measurement system using poled polymer as an EO sensor. A pumping laser is used to induce photo-isomerization effect in the pre-poled EO polymer to both enhance and keep the noncentrosymmetric molecular orientation. This approach increases the EO coefficient and hence enhances the EO measurement sensitivity. Experimental result of an EO sensor made of DR1/PMMA show this method can improve the sensitivity at least two times.

中文摘要 i
英文摘要 ii
誌謝 iii
目錄 iv
表目錄 v
圖目錄 vi
第一章
導論 1
1.1研究目的與動機 1
1.2文獻回顧 3
1.3研究方法 5
1.4論文架構 6
第二章
電光高分子材料特性 7
2.1偶氮染料 7
2.2同分異構化 8
2.2.1順-反式異構 8
2.3電光高分子材料種類 10
2.3.1客主型高分子 10
2.3.2主鍊型高分子 11
2.3.3側鍊型高分子 12
2.3.4交聯型高分子 12
2.4電光高分子極化技術 13
2.4.1平行電極板接觸式極化 13
2.4.2電暈式極化 14
2.4.3光致極化 14
第三章
電光高分子電光效應原理 17
3.1折射率橢圓球 17
3.2線性電光效應 22
3.3伸縮形變 25
3.4旋轉形變 28
第四章
電光高分子薄膜製程 30
4.1電光高分子薄膜制備 30
4.1.1溶液澆注法 30
4.1.2旋轉塗佈法 31
4.2電光高分子薄膜極化 33
4.3電光高分子薄膜特性分析 35
4.3.1FTIR 35
4.3.2AFM 36
4.3.3光譜儀 38
4.4電光效應量測 39
4.4.1穿透式電光效應量測 39
4.4.2反射式電光效應量測 42
第五章
高分子電光探測統量測 45
5.1電光高分子外部式電光探測系統 45
5.2電光高分子光致極化反應 47
5.3利用光致極化效應提升電光探測系統靈敏度 51
5.4激發光強度影響 53
第六章
結論與未來展望 59
參考文獻 60
英文論文大綱 65
簡歷 68

[1] X. Wu, D. Conn, J. Song, and K. Nickerson, “Invasiveness of LiTaO3 and GaAs probe in external E-O sampling,” IEEE J. of Lightwave Tech., 11, 448 (1993)
[2] M Yaita and T. Nagatsuma, “Optical sampling of electrical signals in poled polymeric media,” IEICE Tran. Electron, E76-C, pp.222-228 (1993)
[3] Z. Sekkat, M. Dumont, “Polarization Effects in Photoisomerization of Azo Dyes in Polymeric Films,” Appl. Phys. B 53, 121-123 (1991)
[4] J. I. Thackara, D. M. Bloom, and B. A. Auld, “Electro-optic sampling of poled organic media,” App. Phy. Lett., 59, pp.1159-1161 (1991)
[5] D. M. Zhang et. al., “External electro-optic measurement utilizing poled polymer-based asymmetric Fabry-Perot reflection film,” J. App. Phy., 86, pp.6184-6188 (1999)
[6] Z. Sekkat and M. Dumont, “Photoassisted Poling of Azo Dye Doped Polymeric Films at Room Temperature,” Appl. Phys. B 54, 486489 (1992)
[7] D. S. Chemla and J. Zyss (Eds.), “Nonlinear Optical Properties of Organic Molecules and Crystals, ”Vol. 1 and 2, Academic Press, New York 1987
[8] P.N. Prasad and D. J. Williams, “ Introduction to Nonlinear Optical Effects in Molecules and Polymers, ” John Wiley & Sons, New York 1991.
[9] Simona Bauer-Gogonea, “Nonlinear Optical Polymer Electrets Current Practice, ” IEEE Transactions on Dielectrics and Electrical Insulation Vol. 3 No. 5, October 1996
[10] M. Stahelin, D. M. Burland, M. Ebert, R. D. Miller, 1B. A. Smith,R.J. Twieg, W. Volksen, and C. A. Walsh, “Re-evaluation of the thermal stability of optically nonlinear polymeric guest-host systems, ”Appl. Phys.Lett., Vol. 61, pp. 1626-1628,(1992)
[11] Siegfried Bauer, Simona Bauer-Gogonea, Beatrix Ploss, Bernd Ploss, “Nonlinear dielectric response of poled amorphous polymer dipole glasses, ”Journal of Non-Crystalline Solids 351 (2005) 2759–2763.
[12] I. Teraoka, D. Jungbauer, B. Reck, D. Y. Yoon, R. Twieg, and C. G.Wilson, “Stability of nonlinear optical characteristics and dielectric relaxations of poled amorphous polymers with main-chain chromophores, ”J. Appl. Phys., Vol. 69, pp. 2568-2576,1991
[13] R. Piron, E. Toussaere, D. Josse, S. Brasselet and J. Zyss, “Towards non-linear photonics in all-optically poled polymer microcavities,” Synthetic Metals 115 (2000) 109-119
[14] X. Zhang, X. Lu, L. Wu, and R. T. Chen, “Contact poling of nonlinear optical film for polymer-based electro-optic modulator,” Proc. SPIE 4653, pp87-95, (2002) [15] J. A. Giancometti and O. N. Olivera Jr., “Corona charging of polymers,” IEEE Tran. on Electrical Insulation, 27, 5, pp.924-942, 1992.
[16] K. D. Singer, M. G. Kuzyk, W. R. Holland, J. E. Sohn, S. J. Lalama, R.B. Comizzoli, H. E. Katz, and M. L. Schilling, "Electro-optic phase modulation and optical second-harmonic generatiion in coronapoled polymer films", Appl. Phys. Lett., Vol. 53, pp. 1800-1802,1988.
[17] 劉育松、林建宏、許佳振,“有機高分子薄膜非線性光電性質-基礎與應用”
[18]A.YARIV, P.YEH,“Optical Wave in Crystals”, John Wiley & Sons, Inc, pp.77-79, pp.220-223.
[19] 李恭亮、郭繼華, “晶體光學原理” [20]A.Yariv, Quantum Electronics, John John Wiley & Sons Press, New Yark(1989) [21] Yoshito Shuto and Michiyuki Amano, “Reflection measurement technique of electro-optic coefficients in lithium niobate crystals and poled polymer films,” J. Appl. Phys. 77 (9), 1 May 1995, 4632
[22]Wen-Kai, Wei-Hsuan Chen, Yang-Tung Huang, and Sheng-Lung
Huang,“ Two-dimensional electric-field vector measurement by a LiTaO3
electro-optice probe tip,” Appl. Optics, Vol. 39, No. 27, 4985 (2000)
[23] C.C. Teng and H.T. Man, “Simple reflection technique for measuring the electro-optic coefficient of poled polymers, ” Appl. Phys, lett. 56 (18),30 April 1990