博碩士論文 104226040 完整後設資料紀錄

DC 欄位 語言
DC.contributor光電科學與工程學系zh_TW
DC.creator許菀庭zh_TW
DC.creatorWan-Ting Hsuen_US
dc.date.accessioned2018-8-23T07:39:07Z
dc.date.available2018-8-23T07:39:07Z
dc.date.issued2018
dc.identifier.urihttp://ir.lib.ncu.edu.tw:88/thesis/view_etd.asp?URN=104226040
dc.contributor.department光電科學與工程學系zh_TW
DC.description國立中央大學zh_TW
DC.descriptionNational Central Universityen_US
dc.description.abstract本研究計畫使用PQ-PMMA高分子感光材料擴散特性搭配雙光束干涉曝光法製作第二階的反射式體積布拉格光柵並且改變曝光強度與時間找最佳的曝光參數,以得到較高的第二階光柵繞射效率。因此本論文首先寫下PQ-PMMA光化學反應速率式,模擬PQ與光產物於曝光時,濃度空間上的分佈情形,並且利用分子濃度計算出空間中折射率變化分佈,並以傅氏級數分析得到PQ及光產物週期性空間分佈之第一階與第二階傅氏振幅,最後使用耦合波理論求得其光柵之繞射效率。實驗上,使用第一階光柵的繞射效率最大值之曝光時間作為評估第二階光柵的繞射效率之重要參數。此方法將得到不同的曝光強度下最佳的第二階光柵之繞射效率。zh_TW
dc.description.abstractIn this research, a concept of the manufacturing of 2nd order homemade phenanthrenequinone (PQ)-doped PMMA polymer (PQ-PMMA) volume Bragg gratings (VBGs) were proposed that relies on the diffusion characteristics of PQ. Then the rate-equations were written down and used to evaluate the best exposure parameters for diffraction efficiency of 2nd order grating. The simulation can be used to estimate the distributions of PQ and PQ-PMMA which can further determine the distribution of refractive index of PQ-PMMA. Finally, using the Fourier series and coupled-mode equation, the diffraction efficiency of 1st order and 2nd grating can be estimated. Experimentally, the growth curve of diffraction efficiency of 1st order grating was monitored and interrupt exposure at the maximum diffraction efficiency of 1st order grating. Empirically, the maximum diffraction of 1st order grating can be used to evaluate for diffraction efficiency of 2nd order grating. Based on above empirical norm, the best exposure parameters for diffraction efficiency of 2nd order grating can be obtained under different exposed time.en_US
DC.subject體積布拉格全像光柵zh_TW
DC.subject高分子感光材料zh_TW
DC.subjectVolume Bragg gratingen_US
DC.subjectPQ-PMMAen_US
DC.title利用PQ-PMMA擴散特性製作第二階反射式體積布拉格光柵之研究zh_TW
dc.language.isozh-TWzh-TW
DC.titleStudy of manufacturing 2nd order PQ-PMMA volume Bragg grating by using the diffusion characteristic of PQen_US
DC.type博碩士論文zh_TW
DC.typethesisen_US
DC.publisherNational Central Universityen_US

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