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研究生： 吳政翰
論文名稱： 含氮三五族半導體雷射結構的光學躍遷
Optical Transitions of (III-V-N) Semiconductor Laser structures
指導教授： 陸健榮
學位類別： 碩士
Master
系所名稱： 物理學系
Department of Physics
論文出版年： 2003
畢業學年度： 91
語文別： 中文
論文頁數： 116
中文關鍵詞： 氮砷化鎵銦 、量子井 、光調制反射實驗 、光激螢光實驗 、波函數
論文種類： 學術論文
相關次數： 點閱：189  下載：7 
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    • 我們分別以光調制反射實驗(PR)和光激螢光實驗(PL)來研究由分子束磊晶法(MBE)所長成的一系列含氮三五族半導體雷射結構樣品，此系列的特徵是都含 。並加以比較有無熱退火處理對實驗譜圖的影響和GaAsN緩衝層對樣品間實驗譜圖的影響。
    樣品由於應力對能帶結構的影響，實驗結果觀察到受應力作用後的躍遷能量，我們並利用MATLAB程式推算出量子井的躍遷能量，計算所得躍遷能量到的也符合調制光譜的實驗結果。接下來我們將所得的能量本徵值帶回原轉換矩陣，可求得樣品的電子能級波函數，並探討波函數和調制光譜實驗譜形的關係。

    We have investigated (III-V-N) semiconductor laser structures grown by Molecular Beam Epitaxy (MBE) using photoreflectance and photoluminescence at various temperatures. The investigated laser structures all contain quantum well, and some of them have buffer layers. We have studied effects of rapid thermal annealing and buffer layer on the optical properties.
    All the principal optical transitions in strained (III-V-N) semiconductor laser structures were analyzed. The matrix transfer algorithm was used to calculate transition energies and electronic wavefunctions of the quantum well. The transitions involving the confined quantum states are compared with observed spectral features. The distribution of the calculated electronic wavefunction may explain the intensity variation of the spectral features.

    目錄 摘要…………………………………………………………………I 目錄…………………………………………………………………II 圖目錄………………………………………………………………IV 第一章 簡介…………………………………………………………1 第二章 光調制與螢光光譜原理 2-1 光調制反射光譜的機制……………………………………4 2-2 電子躍遷理論……………………………………………. 6 2-3 光學函數與電子躍遷的關係………………………………9 2-4 調制光譜的基本原理………………………………………17 2-5 電場調制……………………………………………………23 2-6 弱電場調制…………………………………………………33 2-7 光激螢光的機制……………………………………………35 第三章 實驗與結果 3-1 樣品結構………………………………………………38 3-2 光調制實驗…………………………………………………41 3-3 光激螢光實驗………………………………………………44 3-4 實驗結果和譜形結構………………………………………46 第四章 分析與討論 4-1 樣品材料介紹與分析………………………………………60 4-2 晶格應變對能隙的影響…………………………. ………66 4-3 受應力的樣品量子井能帶結構分析……….. ……………69 4-4 量子井能階躍遷的計算……………………………………75 4-5 樣品波函數的探討…………………………………….....92 4-6 樣品間實驗譜圖的比較………………………………....103 第五章 結論與展望…………………………………………..111 附錄A1：量子井求解束縛態Matlab程式………………………112 參考文獻…………………………………………………………114

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