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Student Number 952206041
Author Cha Yu(喻加)
Author's Email Address yugarr@gmail.com
Statistics This thesis had been viewed 1013 times. Download 291 times.
Department Optics and Photonics
Year 2007
Semester 2
Degree Master
Type of Document Master's Thesis
Language zh-TW.Big5 Chinese
Title Development and optimization of a miniature 2.94 μm Er:YAG laser
Date of Defense 2008-06-20
Page Count 50
Keyword
  • blood sampling
  • Er:YAG
  • solid state laser
  • Abstract The principal objective of this thesis is to develop a miniature Er:YAG laser, and to collect blood with it. The performance of a flashlamp pumped miniature 2.94 ?m Er:YAG laser is optimized by using a mathematical model. The model is based on the rate equations with spectroscopic data including energy transfer processes. Using this model, we can explain the phenomenon of great-than-unity quantum efficiency and the experimental phenomenon that the laser pulse slightly extends beyond the pumping pulse in some cases. We found passive loss of our laser system. A method of optimizing the reflectivity of the output coupler was also presented.
    Table of Content 中文摘要 ................................................................I
    英文摘要 ...............................................................II
    誌謝 ..................................................................III
    目錄....................................................................IV
    圖目錄..................................................................VI
    表目錄................................................................VIII
    第一章 序論1
    1.1.研究背景與動機1
    1.2.文獻探討3
    第二章 理論架構及雷射特性5
    2.1.速率方程式5
    2.2.各參數的變異所造成的影響10
    2.3.能量回收機制14
    2.3.1. 大於一的量子效率14
    2.3.2. 時間上的特性15
    第三章 實驗架設19
    3.1.實驗架設—電的部份19
    3.1.1. 高電壓電源供應器20
    3.1.2. 閃光燈20
    3.1.3. 脈衝產生電路的設計理論21
    3.1.4. 閃光燈的脈衝長度及其壽命23
    3.1.5. 觸發電路27
    3.2.實驗架設—光的部份29
    3.2.1. 泵激腔29
    3.2.2. 雷射共振腔31
    第四章 實驗結果及優化34
    4.1.實驗結果34
    4.2.被動損耗37
    4.2.1. 找出理想的四能階雷射的被動損耗的方法37
    4.2.2. Er:YAG雷射的被動損耗39
    4.3.最佳反射率41
    第五章 結論43
    參考文獻................................................................44
    附錄:符號說明..........................................................48
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    [29] V. Lupei, S. Georgescu and V. Florea, "On the dynamics of population inversion for 3 μm Er3+ lasers," IEEE J. Quant. Electron., vol. 29, pp. 426-434, 1993.
    [30] 吴路生 and 周海, "腔长对 Er: YAG 2. 94μm 激光输出的影响," 量子电子学报, vol. 16, pp. 490-493, 1999.
    [31]張瑞彬, “微小化 Er:YAG 固態雷射特性之分析與模擬” 中央大學光電所碩士論文, 2007.
    [32] http://www.kigre.com/files/reflector.pdf
    Advisor
  • Hon-Fai Yau(游漢輝)
  • Yuh-Ping Tong(董玉平)
  • Files
  • 952206041.pdf
  • approve in 2 years
    Date of Submission 2008-05-05

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