微型 Er:YAG 雷射之開發及優化

以作者查詢圖書館館藏

、以作者查詢臺灣博碩士

、以作者查詢全國書目

、勘誤回報

、線上人數：28

、訪客IP：3.133.108.224

姓名

喻加(Cha Yu) 查詢紙本館藏

畢業系所

光電科學與工程學系

論文名稱

微型 Er:YAG 雷射之開發及優化
(Development and optimization of a miniature 2.94 μm Er:YAG laser)

相關論文

★ 雙頻雷射共光程外差干涉橢圓儀	★ 常態偏振自泵激相位共軛效應及具高『常態偏振/非常態偏振』比的光折變自泵激相位共軛器
★ 鈦酸鋇晶體應用於光訊號連結及自/互泵激相位共軛之研究	★ 微循環顯微影像之擷取與分析
★ 光在各向同性與各向異性介質界面上反射之情形	★ 液晶投影顯示器中照明系統的照度量測與分析
★ 即時微循環顯微取像裝置的設計	★ 發光二極體光強度分佈之量測及利用類神經網路之分析
★ 單光束架構下以鈮酸鋰晶體修正受擾動破壞的影像	★ 高效率液晶繞射光學元件
★ 雷射都卜勒測速系統之研究	★ 光在各向異性介質與各向同性介質界面上的反射和透射現象之討論
★ 亂相編碼之體積全像相位鑰匙的重製	★ 利用類神經網路從CCD照相機之照片去獲得發光二極體二維光強度分佈
★ 鈮酸鋰晶體之光扇效應與應用	★ 鈮酸鋰晶體之單光束彩色全像術

檔案

[Endnote RIS 格式]

[Bibtex 格式]

[相關文章]

[文章引用]

[完整記錄]

[館藏目錄]

[檢視]

[下載]

本電子論文使用權限為同意立即開放。
已達開放權限電子全文僅授權使用者為學術研究之目的，進行個人非營利性質之檢索、閱讀、列印。
請遵守中華民國著作權法之相關規定，切勿任意重製、散佈、改作、轉貼、播送，以免觸法。

摘要(中)

波長 2.94 的 Er:YAG 雷射在生物及醫學上有相當多的應用，本論文是要開發出攜帶型的 Er:YAG 雷射採血機的原型，並且將它優化。為做到縮小體積和提昇效率，我們利用文獻中的理論模型和光譜參數，運用數值方法來進行設計及優化。我們用數值模擬，分析了為量子效率大於一的現象和雷射脈衝延續到泵激脈衝之後的現象，也討論光譜參數的不準確對模擬的結果造成之影響。
為提高數值模擬的準確度，必須找到雷射共振腔內的被動損耗，但由於 Er:YAG 不是理想的四能階雷射，傳統找損耗的方法在理論上是無法正確的量測出被動損耗。對此現象，本論文提出了一個數值模擬的結果，其中說明了傳統方法的可行性，進而量測出我們實作出來的 Er:YAG 雷射的被動損耗，同時也只用了四種輸出耦合鏡的反射率，就找到各種雷射輸出能量下的輸出耦合鏡反射率之最佳值。

摘要(英)

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.

關鍵字(中)

★ 固態雷射
★ 採血

關鍵字(英)

★ solid state laser
★ Er:YAG
★ blood sampling

論文目次

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

參考文獻

[1] E. J. Burkes Jr, J. Hoke, E. Gomes and M. Wolbarsht, "Wet versus dry enamel ablation by Er:YAG laser," J. Prosthet. Dent., vol. 67, pp. 847-851, Jun. 1992.
[2] B. Dmovsek-Olup and B. Vedlin, "Use of Er:YAG laser for benign skin disorders," Lasers Surg. Med., vol. 21, pp. 13-19, 1997.
[3] R. Hibst and U. Keller, "Experimental studies of the application of the Er:YAG laser on dental hard substances: I. Measurement of the ablation rate," Lasers Surg. Med., vol. 9, pp. 338-344, 1989.
[4] U. Hohenleutner, S. Hohenleutner, W. Baumler and M. Landthaler, "Fast and effective skin ablation with an Er:YAG laser: determination of ablation rates and thermal damage zones," Lasers Surg. Med., vol. 20, pp. 242-247, 1997.
[5] M. Israel, C. M. Cobb, J. A. Rossmann and P. Spencer, "The effects of CO2, Nd:YAG and Er:YAG lasers with and without surface coolant on tooth root surfaces. An in vitro study," J. Clin. Periodontol., vol. 24, pp. 595-602, Sep. 1997.
[6] U. Keller and R. Hibst, "Experimental studies of the application of the Er:YAG laser on dental hard substances: II. Light microscopic and SEM investigations," Lasers Surg. Med., vol. 9, pp. 345-351, 1989.
[7] D. Savastru, E. Ristici, M. Mustata, S. Miclos, M. Rusu, C. Radu and V. Savu, "Four energy levels device for skin punching," Proceedings of SPIE, vol. 6606, pp. 66061I, 2007.
[8] J. T. Walsh Jr and T. F. Deutsch, "Er:YAG laser ablation of tissue: measurement of ablation rates," Lasers Surg. Med., vol. 9, pp. 327-337, 1989.
[9] J. T. Walsh Jr, T. J. Flotte and T. F. Deutsch, "Er:YAG laser ablation of tissue: effect of pulse duration and tissue type on thermal damage," Lasers Surg. Med., vol. 9, pp. 314-326, 1989.
[10] E. V. Zharikov, V. I. Zhekov, L. A. Kulevskii, T. M. Murina, V. V. Osiko, A. M. Prokhorov, A. D. Savel'ev, V. V. Smirnov, B. P. Starikov and M. I. Timoshechkin, "Stimulated emission from Er3+ ions in yttrium aluminum garnet crystals at λ= 2.94 μ," Sov. J. Quantum Electron., vol. 4, pp. 1039-1040, 1975.
[11] H. J. Eichler, B. Liu, M. Kayser and S. I. Khomenko, "Er:YAG-laser at 2.94 μm Q-switched by a FTIR-shutter with silicon output coupler and polarizer," Optical Materials, vol. 5, pp. 259-265, 1996.
[12] F. E. Livingston, S. M. George and R. K. Shori, "Optimization of a rotary Q-switched Er:YAG laser," Rev. Sci. Instrum., vol. 73, pp. 2526-2532, 2002.
[13] M. Bass, W. Q. Shi, R. Kurtz, M. Kokta and H. Diegl, "Operation of the high dopant density Er:YAG at 2.94 μm," Tunable Solid State Lasers II, vol. 52, pp. 300-305, 1986.
[14] D. W. Chen, C. L. Fincher, T. S. Rose, F. L. Vernon and R. A. Fields, "Diode-pumped 1-W continuous-wave Er:YAG 3-μm laser," Opt. Lett., vol. 24, pp. 385-387, 1999.
[15] B. J. Dinerman and P. F. Moulton, "3-μm cw laser operations in erbium-doped YSGG, GGG, and YAG," Opt. Lett., vol. 19, pp. 1143-1145, 1994.
[16] C. Ziolek, H. Ernst, G. F. Will, H. Lubatschowski, H. Welling and W. Ertmer, "High-repetition-rate, high-average-power, diode-pumped 2.94-μm Er:YAG laser," Opt. Lett., vol. 26, pp. 599-601, MAY 1. 2001.
[17] K. S. Bagdasarov, V. I. Zhekov, V. A. Lobachev, T. M. Murina and A. M. Prokhorov, "Steady-state emission from Y3Al5O12:Er3+ laser (λ= 2.94μ; T= 300 K)," Sov. J. Quantum Electron, vol. 13, pp. 262–263, 1983.
[18] V. Zhekov, V. Lobachev, T. Murina and A. Prok-horov, "Efficient Cross-Relaxation Laser Emitting at λ= 2.94 μm," Sov. J. Quantum Electron, vol. 13, pp. 1235, 1983.
[19] V. Zhekov, V. Lobachev, T. Murina and A. Prokhorov, "Cooperative phenomena in yttrium erbium aluminum garnet crystals," Sov. J. Quantum Electronics, vol. 14, pp. 128-130, 1984.
[20] S. Georgescu, V. Lupei, I. Ursu, V. Zhekov, V. Lobachev, T. Murina and A. Prokhorov, "The role of cross-relaxation mechanisms in the quasistationary generation regime of YAG: Er laser," Rev. Roum. Phys., vol. 31, pp. 857-864, 1986.
[21] V. Zhekov, T. Murina, A. Prokhorov, M. Studenikin, S. Georgescu, V. Lupei and I. Ursu, "Cooperative processes in Y3Al5O12:Er3+ crystals," Sov.J.Quantum Electron, vol. 16, pp. 274-276, 1986.
[22] V. I. Zhekov, V. A. Lobachev, T. M. Murina, A. V. Popov, A. M. Prokhorov and M. I. Studenikin, "Lasing in Y3 Al5 O12: Er3+ (λ= 2.94 μm) crystals as a result of selective excitation of the lower active level," Sov. J. Quantum Electron., vol. 19, pp. 737-738, 1989.
[23] S. Georgescu, V. Lupei, A. Lupei, V. Zhekov, T. Murina and M. Studenikin, "Concentration effects on the up-conversion from the 4I13/2 level of Er3+ in YAG," Opt. Commun., vol. 81, pp. 186-192, 1991.
[24] S. Georgescu, O. Toma and I. Ivanov, "Upconversion from the 4I13/2 and 4I11/2 levels in Er: YAG," J. Lumin., vol. 114, pp. 43-52, 2005.
[25] W. Shi, M. Bass and M. Birnbaum, "Investigation of the interactions between dissimilar ions in (Er, Nd): Y3 Al5 O12," J. Opt. Soc. Am. B, vol. 6, pp. 23-29, 1989.
[26] S. Georgescu and O. Toma, "Er: YAG Three-Micron Laser: Performances and Limits," IEEE Journal of Selected Topics in Quantum Electronics, vol. 11, pp. 682-689, 2005.
[27] W. SHI, M. BASS and M. BIRNBAUM, "Effects of energy transfer among Er3+ ions on the fluorescence decay and lasing properties of heavily doped Er:Y3Al5O12 ?," J. Opt. Soc. Am. B, vol. 7, pp. 1456-1462, 1990.
[28] S. Georgescu and C. Hapenciuc, "A simple method for characterisation the up-conversion processes governing three-micron generation in concentrated erbium crystals," Proceedings of SPIE, pp. 284-289, 2000.
[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

指導教授

游漢輝、董玉平
(Hon-Fai Yau、Yuh-Ping Tong)

審核日期

2008-5-5

推文