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系統識別號 U0026-1207201015015700
論文名稱(中文) 飽和吸收Q和增益雙切換之Er3+-Tm3+全光纖雷射系統之模擬與分析
論文名稱(英文) Simulation and analysis of Saturable-absorber Q-and gain-switched Er3+-Tm3+ all-fiber laser system
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 98
學期 2
出版年 99
研究生(中文) 郭伯吏
研究生(英文) Bo-Li Guo
學號 q1697125
學位類別 碩士
語文別 中文
論文頁數 68頁
口試委員 指導教授-蔡宗祐
口試委員-崔祥辰
口試委員-鄭中緯
口試委員-黃勝廣
口試委員-魏明達
中文關鍵字 Q-切換  全光纖雷射 
英文關鍵字 Q-Switched  All fiber laser 
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Er3+-Tm3+全光纖雷射系統來進行模擬與分析。此雷射系統的結構是以一個1550 nm飽和吸收Q切換全光纖掺鉺雷射中的掺銩Q切換材料作為1950 nm增益切換脈衝雷射的增益材料來完成雙波長光子脈衝雷射系統。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,並探討模態面積不匹配、SAQS可飽和吸收初始值、FBG輸出反射率及其他光子波長設計下對雙波長光子脈衝雷射系統輸出特性的影響。
英文摘要 The purpose of the study is to simulate and analyze a novel saturable-absorber Q-and gain-switched Er3+-Tm3+ all-fiber laser system. The dual-wavelength pulsed all-fiber laser system is a passively Q-switched erbium laser at 1550 nm using thulium doped saturable-absorber fibers that is also the gain medium of an intra-cavity gain-switched laser at 1950 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. The effects of the factors as the mode field area ratio, initial SAQS absorption loss, output coupler loss and designated emission wavelengths on the system performances are analyzed and discussed.
論文目次 目錄
摘要.............................................i
Abstract .........................................ii
誌謝............................................iii
目錄............................................iv
第1章 緒論.......................................1
1.1 前言..........................................1
1.2 研究動機與方法...............................3
第2章 原理與實驗架構............................8
2.1 簡介..........................................8
2.2 增益材料Er分析...............................9
2.3 飽和吸收材料Tm分析.........................11
2.4 銩被動式飽和吸收Q-切換全光纖脈衝雷射......13
2.5 雙波長光子方程式............................18
第3章 Q與增益切換脈衝雷射輸出特性模擬與分析..24
3.1 模場面積不匹配(Mode Field Areas Mismatch)...24
3.2 共振腔的飽和及非飽合損失( Saturable Loss and Non-saturable Loss )..................30
3.2.1 光纖光柵反射率( Output_1 Coupler Reflectivity ) ......................31
3.2.2 SAQS損失( Saturable Loss )..................34
第4章 Q與增益切換脈衝雷射輸出特性在不同波長的模擬與分析.................39
4.1 Q-切換脈衝射雷在不同波長下的模擬與分析....39
4.2增益切換脈衝射雷在不同波長下的模擬與分析..44
第5章 結論與未來展望...........................48
5.1模擬結果討論.................................48
5.2未來展望.....................................49
附錄A..........................................51
A.1 光子方程式 (The rate equation of resonant photons).......................51
A.2 增益居量反轉方程式 (The rate equation of population inversion Ng)..........................55
A.3 吸收居量方程式(The rate equation of absorption population Na)...............................58
A.4 SAQS雷射方程式(Generalize rate equation of SAQS lasers) ................................61
附錄B......................................62
B.1 雷射臨界標準(Laser Threshold Criterion)........62
B.2 抽取效率(Extraction Efficiency).................64
B.3 Q-切換脈衝雷射輸出特性.....................66
參考文獻 第一章
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第二章
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第五章
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附錄
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