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系統識別號 U0026-2907201106180000
論文名稱(中文) 被動式 S,L-band 自平衡 Q 和增益切換摻鉺全光纖雷射
論文名稱(英文) Passive self-balanced Q-and gain-switched erbium all-fiber laser at S and L bands
校院名稱 成功大學
系所名稱(中) 微電子工程研究所碩博士班
系所名稱(英) Institute of Microelectronics
學年度 99
學期 2
出版年 100
研究生(中文) 翁經宇
研究生(英文) Ching-Yu Weng
學號 Q16981179
學位類別 碩士
語文別 中文
論文頁數 82頁
口試委員 指導教授-蔡宗祐
口試委員-黃勝廣
口試委員-魏明達
口試委員-李志成
中文關鍵字 模態場面積不匹配理論  Q切換脈衝  增益切換脈衝  自平衡機制  脈衝的重複速率 
英文關鍵字 mode-field-area-mismatch method  Q-switched  gain-switched  self-balanced mechanism  pulse repetition rate 
學科別分類
中文摘要 本篇論文,提出使用以連續波放射的980 nm的雷射二極體做為雷射激發源,應用模態場面積不匹配理論,採用摻鉺的可飽和吸收光纖來Q切換摻鉺雷射,產生在S-band 內的1510 nm Q切換脈衝,隨之而來產生在L-band 內的1570 nm增益切換脈衝。在雷射輸入功率為175 mW之下,產生的脈衝能量為3.8 μJ、脈衝寬度為0.27μs、脈衝的重複速率為1.7kHz,而且速率隨著輸入功率提高而增加。另外,以速率方程式為基礎,來搭配實驗內容所做出的數值模擬分析,獲得的數值結果與實驗結果相近,而且可以說明Q和增益切換雙脈衝的自平衡機制。在所有做過全光纖被動式Q切換摻鉺雷射的文獻當中,本實驗驗證了第一個可在S-band產生脈衝的摻鉺光纖雷射。
英文摘要 The thesis demonstrates a 980-nm continuous-wave pumped all-fiber erbium laser passively Q-switched at 1510 nm and gain-switched at 1570 nm. By the mode-field-area-mismatch method, we use an Er3+-doped saturable absorber fiber to Q-switch an erbium fiber laser. The sequentially Q-switched-1510-nm pulses have pulse energy of 3.8 μJ, pulse width of 0.27 μs, and pulse repetition rate of 1.7 kHz which linearly varied with the pump power. The data of numerical simulation based on the rate equations is in a good agreement with the experiment result, thereby verifying the self-balanced mechanism between Q-and gain-switched pulses. To the best of our knowledge, we demonstrate, for the first time, an erbium fiber pulsed laser at S-band.
論文目次 第一章 緒論 1
1-1 前言 1
1-2 研究動機與方法 6

第二章 自平衡 Q、增益切換雙脈衝雷射理論 8
2-1 由雷射原理討論雷射共振腔內自平衡機制的速率方程式 8
2-2 以速率方程式探討形成 Q切換和 Q、增益切換脈衝雷射的條件 15
2-3 Q 切換脈衝雷射的輸出方程式 20
2-4 1510 nm Q 切換和 1570 nm 增益切換雙脈衝雷射原理 23

第三章 1510 nm Q 切換、1570 nm 增益切換全光纖被動式雙脈衝雷射
實驗 31
3-1 實驗裝置說明 31
3-2 實驗的各項輸出結果數據與圖形的探討 35

第四章 1510 nm Q、1570 nm 增益切換雙脈衝雷射的數值模擬 44
4-1 數值模擬需要的條件和參數定義 44
4-2 數值模擬結果 49
4-3 由數值模擬結果來探討 Q 切換、增益切換脈衝產生的步驟 54
4-4 由雷射理論來探討數值模擬結果 60

第五章 結論 62
參考文獻 63

附錄一 雷射共振腔的速率方程式之推導 66
1-1 Q 切換共振腔的速率方程式之推導 66
1-2 Q、增益切換雙共振腔的速率方程式之推導 73

附錄二 Q 切換脈衝雷射的輸出方程式之推導 76
附錄三 雙飽和狀態所能形成的脈衝能量之理論推導 81
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2. L. Pan, I. Utkin, and R. Fedosejevs, “Two wavelength passively Q- switched ytterbium doped fiber laser,” Opt. Express 16(16), 11858-11870 (2008).
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4. M. Delgado-Pinar, D. Zalvidea, A. Diez, P. Perez-Millan and M. V. Andres,“ Q-switching of an all-fiber laser by acousto-optic modulation of a fiber Bragg grating,” Opt. Express 14, 1106-1112 (2006).
5. Z. Yu, M. Malmstrom, O. Tarasenko, W. Margulis, and F. Laurell, “Actively Q-switched all-fiber laser with an electrically controlled microstructured fiber,” Opt, Express 18, 11052-11057 (2010).
6. L. Tordella, H. Djellout, B. Dussardier, A. Saissy, and Monnom, “High repetition rate passively Q-switched Nd3+: Cr4+all-fiber laser,”
Electron.Lett.39,1307(2003).
7. P. Adel, M. Auerbach, C. Fallnich, S. Unger, H.-R. Muller and J. Kirchhof, “Passive Q-switching by Tm3+ co-doping of a Yb3+ fiber laser,”
Opt. Express 11, 2730-2735 (2003).
8. A. A. Fotiadi, A. S. Kurkov and I. M. Razdobreev, “All-fiber passively Q-switched Ytterbium laser,” 2005 Conference on Lasers and Electro-Optics Europe, p.515.

9. A. S. Kurkov, E. M. Sholokhov and O. I. Medvedkov, “All fiber Yb-Ho pulsed laser,” Laser Phys. Lett. 6.2, 135-138 (2009).
10. V. V. Dvoyrin, V. M. Mashinsky, and E. M. Dianov, “Yb-Bi pulsed fiber lasers,” Opt. Lett. 32, 451-453 (2007).
11. T.-Y. Tsai, Y.-C. Fang and S.-H. Hung, “Passively Q-switched erbium all-fiber lasers by use of Thulium-doped saturable-absorber fibers,” Opt. Express 18, 10049-10054 (2010).
12. T.-Y. Tsai, Y.-C. Fang, Z.-C. Lee and H.-X. Tsao,“ All-fiber passively Q-switched erbium laser using mismatch of mode field areas and a saturable-amplifier pump switch,” Opt. Lett. 34, 2891-2893 (2009).
13. A. S. Kurkov, Ya. E. Sadovnikova, A. V.Marakulin, and E. M. Sholokhov,” All fiber Er-Tm Q-switched laser,” Laser Phys. Lett. 7, 11, 795-797 (2010).
14. T.-Y. Tsai and Y.-C. Fang, “A self-Q-switched all-fiber erbium laser at 1530 nm using an auxiliary 1570-nm erbium laser,” Opt. Express 17, 21629-21633 (2009).
15.W. de Rossi, F. E. Costa, N. D. Vieira Jr. , N. U. Wetter, S. P. Morato, T. T. Basiev, V. A. Konyushkin, and S. B. Mirov, “Mode-locking operation of a pulsed Nd:YAG laser with F2-:LiF color-center crystal in a dual configuration”, Appl. Opt. 31, 15, 2719 (1992).
16.T.-Y. Tsai and Y.-C. Fang, H.-M. Huang, H.-X. Tsao, and S.-T. Lin,
“Saturable absorber Q-and gain-switched all-Yb3+ all fiber laser at 976 and 1064 nm,” Opt. Express 18, 23523-23528 (2010).

17. Verdeyen, Joseph Thomas. , Laser electronics (3rd ed.), Upper Saddle River, N. J. :Prentice Hall, 2000.
18.A. Siegman, “Passive saturable absorber Q-switching”, Chap. 26.3, Lasers (University Science Books, 1986), 1024-1033.
19.Tzong-Yow Tsai, (2000), “ Saturable Absorber QSwitches for Mid-IR Solid State Lasers,” Faculty of The Graduate School University of Southern California.
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