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系統識別號 U0026-2607201712592500
論文名稱(中文) 976-nm 被動式Q-開關全光纖脈衝雷射的效率改善研究
論文名稱(英文) A study and improvement of a passively Q-switched all-fiber laser at 976nm
校院名稱 成功大學
系所名稱(中) 微電子工程研究所
系所名稱(英) Institute of Microelectronics
學年度 105
學期 2
出版年 106
研究生(中文) 廖興維
研究生(英文) Xing-Wei Liao
學號 Q16041220
學位類別 碩士
語文別 中文
論文頁數 66頁
口試委員 指導教授-蔡宗祐
口試委員-許芳文
口試委員-林士廷
口試委員-方彥程
口試委員-魏明達
中文關鍵字 全光纖雷射  模態場不匹配  脈衝重覆率  自發性Q與增益雙切換 
英文關鍵字 all-fiber laser  mode-filed-area mismatch  repetition rate  self-balanced Q- and gain- switching 
學科別分類
中文摘要 本論文研究摻鐿可飽和被動式全光纖脈衝雷射系統的特性。使用915nm的laser diode的連續波雷射作為驅動源,設置雙共振腔系統在976nm與1030nm,使用模態場不匹配的技術加速可飽和吸收體自平衡機制,架設出全光纖雷射系統。實驗分兩部分:(1)藉由縮短共振腔長度量測到比較短的脈衝寬度藉以提高脈衝鋒值(2)使用FBG把原本架構散失的能量重新利用,提高系統效率,同時兼具穩定laser diode的波長的功能。在輸入功率197mW時,即可產生脈衝能量0.3574µJ,重複率101kHz,脈衝寬度72ns,脈衝峰值4.963W的976nm雷射。
英文摘要 In this paper, the previous results of the laboratory are studied to study the characteristics of ytterbium-saturated, passive, all-fiber pulsed laser systems. A 915 nm laser diode was used as the driving source for the continuous wave laser and the dual resonator system was set at 976 nm and 1030 nm. At the same time, the modal field mismatch technique is used to accelerate the self-balancing mechanism of saturated absorber, and the all-fiber laser system is set up. In addition, the use of Matlab simulation of the laser equation, auxiliary simulation of the resonant cavity of the behavior. The influence of the parameters on the Ng value and the Na value is discussed, and an optimized result is obtained in the system. Experiments is divided into two parts: (1) by reducing the resonant cavity length to measure the better pulse characteristics and (2) the use of FBG to restore the original structure of the energy reuse, improve system efficiency, while both stable laser diode wavelength The function is equivalent to the third resonator of the system. When the input power is 197mW, it can generate 976nm laser with pulse energy of 0.3574μJ, repetition rate of 101kHz, pulse width of 72ns and pulse peak of 4.963W.
論文目次 目錄
中文摘要 I
Abstract II
誌謝 VIII
目錄 IX
圖目錄 XI
表目錄 XIII
第一章 緒論 1
1-1 論文架構 1
1-2 前言 1
1-3 研究領域論述 3
1-4 研究動機與方向 4
第二章 Q切換脈衝雷射原理 7
2-1 摻鐿光纖雷射運作 7
2-1-1 能階 7
2-1-2 鐿能階探討 7
2-2 Q切換雷射條件 9
2-2-1 Q切換雷射方程式 9
2-2-2 Q切換雷射方程式推導 10
2-2-3 模態場不匹配 14
2-2-4 模態場不匹配推導 15
2-3 雙共振腔雷射系統 17
2-3-1 雙共振腔自平衡切換 17
2-3-2 雙共振腔方程式 20
2-3-3 雙共振腔方程式推導 20
2-3-4 雙共振腔增益與吸收物理量計算 23
第三章 共振腔數值模擬分析 25
3-1 雷射操作模擬 25
3-2 泵浦源輸入分析 28
3-3 第一共振腔長度分析 31
3-4 第二共振腔長度分析 34
3-5 SAQS長度分析 37
第四章 實驗與量測 40
4-1 實驗方法與實驗儀器介紹 40
4-2 雙共振腔系統架設 44
4-3 實驗探討(A)980/1030nm WDM移除 47
4-4 實驗探討(B)可飽和吸收體最小化 49
4-5 實驗探討(C)縮短共振腔 51
4-6 實驗探討(D)915port分析 52
4-7 雷射二極體波長穩定分析 56
第五章 結論與未來展望 60
5-1 結論 60
5-2 未來展望 61
文獻回顧 62
附錄 參數代號 65

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