Title page for 982206016


[Back to Results | New Search]

Student Number 982206016
Author Quan-Hsiang Tseng(曾冠翔)
Author's Email Address s982206016@dop.ncu.edu.tw
Statistics This thesis had been viewed 404 times. Download 321 times.
Department Optics and Photonics
Year 2010
Semester 2
Degree Master
Type of Document Master's Thesis
Language zh-TW.Big5 Chinese
Title Aperiodic Poled Lithium Niobate Electro-optic Bragg Deflector as an Efficient Laser Q-switch in a Dual-wavelength Solid-State Laser
Date of Defense 2011-07-27
Page Count 54
Keyword
  • Bragg Deflector
  • Lithium Niobate
  • Q-switch
  • Abstract Bragg condition is very sensitive to incident wavelength. With this characteristic, we can diffract wavelength with appropriate Bragg structure. In this letter, we first design an aperiodic structure with the help of simulated anneal algorism which compensates reciprocal vectors of dual wavelength emitted in Nd doped solid state laser system.
      Lithium Niobate is a great electro-optic crystal. With the technics of high electric field poled, we can generate the structure we calculate previously on LN crystal. Thus, a 40 mm long, 5 mm in width and thickness of 0.5 mm aperiodic poled Lithium Niobate Bragg diffraction device is fabricated successfully.
      In experiment, we measured the high diffraction efficiency both on 1064 nm and 1342 nm, 93.5% and 92.5% respectively, at 120 volt applied voltage. Furthermore, we put our chip into the Nd:YVO4 slid sate laser system and applied a periodic electric field to the chip, we can turn it into a cavity Q-switch device. With the sum frequency crystal BIBO, we can generate narrow and high peak power 593 nm output from dual emission wavelength of Nd 1064 nm and 1342 nm. In results, the yellow-orange light output with the pulse width of 9.7 ns and peak power of 167 W under 8.142 W of Nd absorption power.
    Table of Content 摘要I
    AbstractII
    圖目錄V
    表目錄IX
    致謝X
    第一章 緒論1
    1-1 發展與歷史1
    1-2 鈮酸鋰晶體 (Lithium Niobate, LiNbO3)3
    1-3 研究動機4
    1-4 內容概要9
    第二章 理論分析10
    2-1 鈮酸鋰晶體之電光效應 (Electric-optical effect)10
    2-2 布拉格繞射 (Bragg diffraction)15
    2-3 共振腔調制 (Cavity Q-switch)19
    2-4 和頻機制 (Sum Frequency Generation, SFG)24
    第三章 元件設計與製程29
    3-1 雙波長布拉格繞射元件設計29
    3-2 雙波長布拉格繞射元件製備36
    第四章 實驗與結果39
    4-1 繞射效率量測39
    4-2 Q調制短脈衝雷射特性量測46
    第五章 結論與未來展望49
    5-1 結論49
    5-2 未來展望50
    第六章 參考文獻52
    Reference [1] Physics Today, pp.72 Oct. 2007
    [2] J. A. Giordmaine, “Mixing of light beam in crystal”, Phys. Rev. Lett. 8, 19–20 (1962)
    [3] W. H. Zachariasen,Skr. Norske Vid-Ada.,Oslo,Mat. Naturv. No.4 (1928)
    [4] B. T. Matthias and J. P. Remeika, “Ferroelectricity in the illmenite structure”,Phys. Rev. 76 (1949) 1886.
    [5] A. A. Ballman, “Growth of piezoelectric and ferroelectric materials by the Czochralski technique”, J. American Ceram. Soc. 48 (1965) 112.
    [6] 胡明理, ” Zn:LiNbO3 之晶體生長與其特性研究”, 中央大學(2004)
    [7] k.w. Su, y.t. Chang, y.f. Chen, “Power scale-up of the diode-pumped actively Q-switched Nd:YVO4 Raman laser with an undoped YVO4 crystal as a Raman shifter”, Appl. Phys. B 88, 47–50 (2007)
    [8] Yung-Fu Chen, S. W. Tsai, “Diode-pumped Q-switched Nd:YVO4 yellow laser with intracavity sum-frequency mixing”, March 15, 2002 / Vol. 27, No. 6 / OPTICS LETTERS
    [9] George A. Henderson, "A computational model of a dual-wavelength solid-state laser", J. Appl. Phys. 68(11), 5451(1990)
    [10] Y. Y. Lin, S. T. Lin, G. W. Chang, A. C. Chiang, and Y. C. Huang, Y. H. Chen, “Electro-optic periodically poled lithium niobate Bragg modulator as a laser Q-switch”, March 1, 2007 / Vol. 32, No. 5 / OPTICS LETTERS
    [11] S. T. Lin, G.W. Chang, Y.Y. Lin, Y.C. Huang, A.C. Chiang and Y.H. Chen, “Monolithically integrated laser Bragg Q-switch and wavelength converter in a PPLN crystal”, Optics Express, Vol. 15, Issue 25, pp. 17093-17098 (2007)
    [12] H. Hellwig _, J. Liebertz and L. Bohat´y, “EXCEPTIONAL LARGE NONLINEAR OPTICAL COEFFICIENTS IN THE MONOCLINIC BISMUTH BORATE BiB3O6 (BIBO)”, Solid State Communications, Vol. 109, No. 4, pp. 249–251, 1999
    [13] 張煒堃碩士論文, “以串級式電光週期性晶格極化反轉鈮酸鋰達成三波長主動式Q-調制Nd:YVO4雷射”, June, 2007
    [14] 陳彥良碩士論文, “高效率雙Nd:YVO4 雷射和頻黃光產生系統”, June, 2007
    [15] 張錫雄碩士論文, " 以單塊二維週期性晶格極化反轉鈮酸鋰同時作為Nd:YVO4雷射之電光Q調制器和腔內光參量振盪器”, 2010
    [16] Amnon Yariv, Pochi Yeh, “Optical Waves in Crystals”, 1984
    [17] Orazio Svelto, David C.Hanna, “Principle of Laser”, 1989
    Advisor
  • Yen -Hung Chen(陳彥宏)
  • Files
  • 982206016.pdf
  • approve in 1 year
    Date of Submission 2011-08-26

    [Back to Results | New Search]


    Browse | Search All Available ETDs

    If you have dissertation-related questions, please contact with the NCU library extension service section.
    Our service phone is (03)422-7151 Ext. 57407,E-mail is also welcomed.