頁籤選單縮合
題名 | Study of Ultraviolet GaN-based Laser with AIN/AIGaN Distributed Bragg Reflectors=具氮化鎵與氮化鋁鎵布拉格反射鏡之紫外光波段氮化鎵雷射之特性研究 |
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作者 | 陳振昌; 陳俊榮; 楊怡君; 施閔雄; 郭浩中; Chen, Cheng-chang; Chen, Jun-rong; Yang, Yi-chun; Shih, Min-hsiung; Kuo, Hao-chung; |
期刊 | 光學工程 |
出版日期 | 20120300 |
卷期 | 117 2012.03[民101.03] |
頁次 | 頁21-28 |
分類號 | 448.552 |
語文 | eng |
關鍵詞 | 氮化鎵; 發光二極體; 雷射二極體; 布拉格反射鏡; GaN-based materials; Light emitting diodes; LED; Laser diodes; LD; Bragg reflector; |
中文摘要 | 由於氮化鎵材料具有直接寬能隙引起大家的關注並且廣泛的製作成各種應用光電元件像發光二極體與雷射二極體。高亮度的氮化鎵發光二極體使它應用在交通號誌、液晶顯示器背光源和固態照明的可行性。此外,藍光雷射二極體是其中廣受應用在高密度的數位儲存工具的光源。本論文旨在研究具二十五對的氮化鎵與氮化鋁鎵布拉格反射鏡之紫外光波段微型圓盤氮化鎵雷射。此布拉格反射鏡具85%的高反射率。接著我們研究不經深蝕刻或下部蝕刻的製程製做出大小為4.7μm 的氮化鎵微型圓盤紫外波段光雷射。經過光性量測系統的量測,得到具低截止功率密度為0.03kW/cm2的雷射。藉由有限差分時域分析模擬我們去研究迴音壁模態的共振模態。 |
英文摘要 | Wide and direct bandgap of GaN-based materials have been attracted much attention forapplications such as light emitting diodes (LED) and laser diodes (LD). The high brightnessGaN-based light emitting diodes (LEDs) have made it possible to apply in traffic signals,backlight in liquid crystal displays, and solid state lighting. Besides, the blue LD can serve asthe light source of high density data storage in high definition digital versatile disk(HD-DVD)which is one of the popular data storage tools. In this thesis, we are focus on the design andfabrication of the optical pumped ultraviolet GaN-based microdisk and square lattice ofphotonic crystal lasers with 25 pair AlN/AlGaN distributed Bragg reflectors. The distributedBragg reflector provides a high reflectivity of 85%. We demonstrated a 4.7 μm GaN-basedmicrodisk laser in ultraviolet range without undercut or deeply-etching procedures. Underoptical pumping conditions, the lasing action was observed with a low threshold power densityof 0.03 kW/cm2. We also characterized the whispering gallery mode(WGM) profiles of the microdisk with finite-different time-domain simulation. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。