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系統識別號 U0026-0111201918144300
論文名稱(中文) 單頻藍綠光外腔二極體雷射
論文名稱(英文) Single frequency Blue and Green Laser Diode in External Cavity.
校院名稱 成功大學
系所名稱(中) 光電科學與工程學系
系所名稱(英) Department of Photonics
學年度 108
學期 1
出版年 108
研究生(中文) 陳銘輝
研究生(英文) Ming-Hui Chen
學號 L78041143
學位類別 博士
語文別 英文
論文頁數 87頁
口試委員 指導教授-崔祥辰
口試委員-曾碩彥
口試委員-曾盛豪
口試委員-林碩泰
口試委員-溫博浚
中文關鍵字 二極體雷射  頻率參考  外腔雷射  單頻 
英文關鍵字 laser diode  frequency references  external cavity diode laser  single frequency 
學科別分類
中文摘要 本論文選擇並分析了在藍綠波段範圍內運作的氮化銦鎵(InGaN)雷射二極體(Laser Diode; LD),並以此二極體雷射,設計出光頻率基準。在進行氮化銦鎵二極體雷射放入頻率參考的光學系統研究之前,先行探討了氮化銦鎵二極體藍光雷射隨著工作電流和二極體溫度的模態演變。二極體藍光雷射可以在接近雷射發射閾值的情況下,發出線寬約為20 MHz的mW等級單頻雷射光束。當我們為特定的應用選擇適合二極體藍光雷射,分析其工作電流和二極體溫度對藍光雷射二極體的模態演變是非常重要的。
然後,設計並建置了利特洛(Littrow)類型的外腔二極體雷射器(External Cavity Diode Laser; ECDL)系統。其頻率穩定的單頻綠光氮化銦鎵外腔二極體雷射可以產生線寬為5.1 MHz且輸出功率超過40 mW的雷射光束。此外,我們在利特洛類型的外腔中展示了445 nm氮化銦鎵外腔二極體雷射。其調製範圍估計為4 nm。最大輸出功率可以高達20 mW,而斜率效率約為0.36 W / A。該氮化銦鎵外腔二極體雷射的線寬在雷射閾值時為4.7 MHz,如果在更高的電流下則是8.1MHz。藍光外腔二極體雷射可以在整個工作範圍內發出單頻雷射光。最後,我們討論使用基於碘分子超精細躍遷的飽和吸收光譜方法來實現穩頻。
英文摘要 In this thesis, Indium gallium nitride (InGaN) laser diodes (LDs) operated within a blue-green wavelength region was selected and analyzed for designing robust and compact frequency references. Before putting InGaN LDs inside the frequency reference optical system, the mode evolution of InGaN blue LDs with operating currents and diode temperatures was investigated. The blue LDs can deliver a mW-level single frequency beam with about 20-MHz linewidth at nearly above the lasing threshold. Analysis of the mode evolution of a blue laser diode with operating current and diode temperature is very important when how to choose the LDs for specific applications.
Then, an external cavity diode laser (ECDL) system in Littrow layout was designed and set up. A frequency-stable single-frequency green InGaN ECDL can produce a laser beam with its 5.1-MHz linewidth and the more than 40-mW output power. Furthermore, we show a single-frequency ECDL based on the 445-nm blue LD in the Littrow-type external cavity. Its tuning range was estimated at 4 nm. The maximum output power was up to 20 mW, and the slope efficiency was approximately 0.36 W/A. The ECDL linewidth was measured as 4.7 MHz at a lasing threshold to 8.1 MHz at higher applied currents. A blue ECDL can deliver a single frequency laser beam within the whole operation range. Finally, we reported a frequency stabilization using a saturated absorption spectroscopy method based on iodine hyperfine transitions can be realized with the ECDL.
論文目次 Table of Contents
論文摘要 I
Abstract II
Acknowledgements IV
Table of Contents V
List of Figures VI
List of Table IX
Chapter 1 Introduction 1
1-1 Optical Frequency References 1
1-2 Single Frequency Laser 3
1-3 Research Motivations 6
1-4 Overview of this Thesis 7
Chapter 2 The Spectral Mode Evolution inside a Blue InGaN Laser Diode 9
2-1 The Introduction to Laser Modes 9
2-2 Experimental Setup 15
2-3 Experimental Results and Discussions 17
Chapter 3 Single Longitudinal Mode external cavity blue InGaN Laser Diode 33
3-1 Introduction 33
3-2 Experimental Setup 39
3-3 Experiment Results and Discussions 46
Chapter 4 A Green InGaN Laser Diode in Extended External Cavity 55
4-1 Introduction 55
4-2 Experimental Details 58
Chapter 5 Frequency References at Blue and Green Region with InGaN Laser Diode in External Cavity 70
Chapter 6 Conclusions and Future Works 80
6-1 Conclusions 80
6-2 Future works 82
References 84
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