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系統識別號 U0026-1007201216573300
論文名稱(中文) 提高自平衡Q與增益切換雙脈衝重複率之研究
論文名稱(英文) Study on high pulse repetition rates of self-balanced Q- and gain-switching
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 100
學期 2
出版年 101
研究生(中文) 馬浩翔
研究生(英文) Hao-Hsiang Ma
學號 q16991043
學位類別 碩士
語文別 中文
論文頁數 88頁
口試委員 指導教授-蔡宗祐
召集委員-魏明達
口試委員-李志成
口試委員-林士廷
口試委員-方彥程
中文關鍵字 雷射  雙脈衝  Q切換  增益切換  脈衝重複率 
英文關鍵字 laser  gain-switch  Q-switch  pulse repetition rate 
學科別分類
中文摘要 本論文將針對一個飽和吸收Q和增益雙切換之全摻鉺全光纖雷射系統來進行模擬,並分析如何提高其脈衝重覆率至100kHz以上。此雷射系統的結構是由980nm的連續波雷射激發全Er3+雷射並自動Q切換與增益切換。論文中有推導出一組雙波長光子微分方程式可以用來模擬分析在雙波長光子脈衝雷射系統內的雙波長光子、增益居量及吸收居量的相互關係,並探討調整激發能量、增益光纖與可飽和吸收體的長度、第一與第二共振腔的長度以及反射率對雙波長光子脈衝雷射系統脈衝重複率、脈衝寬度、脈衝功率峰值與脈衝能量的影響。
英文摘要 The purpose of the study is to simulate and analyze a 980-nm CW-pumped passively pulsed all-Er3+ all-fiber laser and maximize the pulsing repetition rate beyond 100kHz. The laser was saturable-absorber Q-switched at 1510 nm using the mode-field-area mismatch method with the saturable-absorber in an intra-cavity gain-switched at 1570 nm. A set of rate equations is established to model the interaction between the photons of two wavelengths and the populations of the gain and the absorber fibers. In the thesis, the variables of the pump power, the gain and SAQS fiber lengths, the resonator lengths and the reflectivity in relation to the outputs of the repetition rate, the pulse duration, the peak power and pulse energy were numerically simulated and discussed.
論文目次 目錄
第1章 緒論 1
1-1前言 1
1-2 文獻探討 3
1-3研究動機與方法 5
1-4論文架構 8
第2章 被動式Q切換雷射系統的原理探討 9
2-1波長1510nm脈衝雷射產生原理 9
2-1-1鉺原子能階探討 9
2-1-2 產生被動式Q切換脈衝雷射的必要條件 12
2-2 雙脈衝雷射系統產生原理 17
2-2-1雙脈衝系統的優點與實驗架構 17
2-2-2雙脈衝雷射系統理論 18
2-2-3 增益切換對吸收居量恢復機制的強化 20
2-3 模場面積不匹配技術(Mode Field Areas Mismatch) 21
2-4.雙光子之波長對系統效率的影響 23
第3章 系統模擬與分系 25
3-1模擬架構架設與執行模擬 25
3-1-1模擬架構架設 25
3-1-2架構模擬執行 28
3-2 三種主要參數對脈衝重複率的影響 30
3-2-1激發能量對脈衝重複率的影響 30
3-2-2.增益光纖長度對脈衝重複率的影響 34
3-2-3 可飽和吸收體的初始吸收值對脈衝重複率的影響 38
3-3 四種次要參數對脈衝重複率的影響 42
3-3-1 第一共振腔長度對脈衝重複率的影響 42
3-3-2 第二共振腔長度對脈衝重複率的影響 48
3-3-3 第一共振腔反射率對脈衝重複率的影響 52
3-3-4 第二共振腔反射率對脈衝重複率的影響 55
第4章 改變波長對脈衝系統的影響 59
4-1 Q-切換脈衝雷射在不同波長下的模擬與分析 59
4-2 增益切換脈衝雷射在不同波長下的模擬與分析 64
第5章 結論 67
5-1 模擬結果討論 67
5-2未來展望 70
參考文獻 71
附錄A 75
A-1光子數方程式(The rate equation of resonant photons ) 75
A-2 第二共振腔光子數方程式 (The rate equation of second resonant photons) 79
A-3 增益居量方程式(The rate equation of population inversion)(Ng) 83
A-4 吸收居量方程式(The Rate equation of absorption population )(Na) 87
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