臺灣博碩士論文加值系統

高品質的非線性光學單晶之製備是光資訊處理元件的關鍵技術，其應用如光資訊處理、計算、影像儲存等。由於近來光折變晶體在應用上快速發展，且需求量大增，因此近年來頗受重視。
吾人以懸浮熔區法生長矽酸鉍晶體。矽酸鉍簡稱BSO，其在光折特性上，由於具有高敏感性，快速的響應時間，使得BSO晶體具有潛力應用於即時影像處理、光計算、影像輸出調變、即時檢測、影像放大與相位共軛等，並可以製造電光、磁光感應器，應用範圍相當廣。
本文中吾人嘗試以不同燒結條件，期望能製作出最適合懸浮熔區法生長之原料棒。本文並討論影響熔區穩定性之因素，提供了解決生長過程中熔區不穩定之問題。此外本文也討論了不同生長速度、晶體直徑、使用晶種、溫場控制，對生長晶體之影響。

Manufacture of Non-linear optical(NLO) single crystal is the fundamental technology of optical process unit. NLO single crystal can apply to optical information processing, calculation and image stockpile. It come to important recently.
We made up bismuth silicate(BSO) crystal by Floating-Zone method. BSO can apply to real-time optical information processing, optical computing, incoherent-to-coherent optical image conversion, real-time interferometry, image amplification and phase conjugation because of it’s sensitive properties. It also can apply to optical electric sensor or optical magnetic field sensor.
We attempted to make up the most suitable feeding rod for floating-zone crystal growth by using different sintering method. We also discussed the cause which influence the stability of melting zone. And then we solved the unstable of melting zone. Beside we discussed the influence of crystal quality by using different crystal growth rate, crystal diameter, seed and temperature.

目 錄
中文摘要………………………………………………………………….I
Abstract………………………………………………………………….II
目 錄…………………………………………………………………..III
圖目錄…………………………………………………………………...V
表目錄………………………………………………………………...VIII
第一章 緒論…………………………….……………………………….1
1.1 簡介……………………………………………………………..1
1.1-1矽酸鉍晶體………………………………………………...1
1.1-2晶體生長製程……………………………………………...4
1.2 文獻回顧………………………………………………………..5
1.2-1橢圓鏡爐…………………………………………………...5
1.2-2矽酸鉍單晶生長…………………………………………...5
1.3 研究動機………………………………………………………10
第二章 實驗系統、設備及流程……………………….………………11
2.1實驗設備………………………………………………………..11
2.1-1爐體………………………………………………………..11
2.1-2冷卻裝置…………………………………………………..11
2.1-3熱源……………………………………………………….15
2.1-4變電壓裝置………………………………………………18
2.1-5穩壓裝置………………………………………………….18
2.1-6升降及旋轉裝置………………………………………….18
2.1-7晶體生長室……………………………………………….20
2.1-8記錄設備………………………………………………….20
2.1-9測溫系統………………………………………………….20
2.2實驗流程………………………………………………………25
2.2-1材料之製備……………………………………………….25
2.2-2晶體生長實驗步驟……………………………………….27
第三章 結果與討論……………………………………………………32
3.1原料製備………………………………………………………..32
3.1-1原料燒結度之影響……………………………………….32
3.1-2晶種之影響……………………………………………….42
3.2熔區穩定性……………………………………………………..46
3.3生長條件………………….….…………………………………47
3.3-1溫場之影響………….……………………………………47
3.3-2晶體生長速度之影響…………………………………….54
3.3-3生長晶體直徑之影響…………………………………….64
第四章 結論……………………………………………………………67
參考文獻………………………………………………………………. 68

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