跳到主要內容

臺灣博碩士論文加值系統

(44.200.194.255) 您好!臺灣時間:2024/07/18 13:20
字體大小: 字級放大   字級縮小   預設字形  
回查詢結果 :::

詳目顯示

: 
twitterline
研究生:陳建豪
研究生(外文):Chien-Hwo Chen
論文名稱:Cr4+:YAG飽和吸收被動Q-開關Nd:YAG雷射中倍週期至混沌特性研究
論文名稱(外文):Period-Doubling Route to Chaos in a Passive Q-Switched Nd:YAG Laser with a Cr4+:YAG Saturable Absorber
指導教授:魏明達
指導教授(外文):Ming-Dar Wei
學位類別:碩士
校院名稱:逢甲大學
系所名稱:光電物理研究所
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2004
畢業學年度:92
語文別:中文
論文頁數:51
中文關鍵詞:倍週期Q開關飽和吸收體雷射Cr4+:YAG混沌
外文關鍵詞:Saturable absorberperiod-doublinglaser cavitychaosQ-switched
相關次數:
  • 被引用被引用:1
  • 點閱點閱:274
  • 評分評分:
  • 下載下載:31
  • 收藏至我的研究室書目清單書目收藏:0
我們研究被動Q-開關Nd:YAG雷射的非線性動態行為,在操作閥值附近的橫模簡併共振腔中發現了倍週期路徑到混沌的現象,利用模態分析,我們發現倍週期路徑的分岔伴隨著低階橫模級數(the low order of the transverse mode)的增加,由此可以確認非線性的機制應屬於橫模間的相互競爭,和之前發表在縱模操作的機制上有所不同。此外,我們發現的由週期三、週期五及週期七為起始之倍週期發展到混沌的路徑,利用相關微度計算典型及由週期三發展形成的渾沌訊號,其相關微度為4.583 0.044和4.456 0.059,因此我們認為後者為倍週期路徑中的週期窗口(periodic windows)。
We study the nonlinear dynamic behavior in a passive Q-switched Nd:YAG laser system with a Cr4+:YAG saturable absorber. By operating in transverse-mode-degeneracy cavity, we find the doubling-route to chaos near the threshold. We find that the bifurcation accompanies with the low order of the transverse mode by analyzing the mode pattern variation. Therefore, we can confirm our mechanism should belong to multi-transverse mode competition, and the mechanism is different from the previous study. Besides, we also find the period-doubling route to chaos beginning from period 3、period 5 and period 7. By calculating correlation dimensions of the chaotic signals for the tradition route and the one beginning from period 3, the dimensions are 4.583 0.044 and 4.456 0.059, respectively. Thus, we think that the latter one is the periodic windows in a period-doubling route to chaos.
第一章、序論…………………………………………………1

1.1、Q開關雷射簡介………………………………………1

1.2、固態被動式Q開關…………………………………1

1.3、動機與目的……………………………………………4

1.4、章節概述………………………………………………5

第二章、基本原理……………………………………6

2.1、Q開關基本原理與機制………………………………6

2.1.1、被動式Q開關雷射……………………………6

2.1.2、飽和吸收體………………………………………9

2.1.3、被動式Q開關雷射原理………………………12

2.2、雷射共振腔…………………………………………14

2.2.1、雷射共振腔穩定條件…………………………14

2.2.2、橫模簡併………………………………………17

2.3、雷射非線性動態行為………………………………19

第三章、實驗結果…………………………………………23

3.1、CW雷射共振腔…………………………………………23

3.2、被動式Q開關雷射共振腔架構………………………26

3.3、倍週期到混沌路徑……………………………………28

3.4、橫模簡併的現象………………………………………38

第四章、實驗結論與未來目標…………………………………47

4.1、混沌簡介………………………………………………47

4.2、未來目標………………………………………………48

參考資料……………………………………………………50
[1] 丁勝懋 “雷射工程導論,” (中央圖書出版社出版), 1995
[2] 呂助增 “雷射原理與應用,” (滄海書局出版), 2000
[3]A. AGNESI, S. DELL’ACQUA, and G. C. REALI, “High performance Cr4+:YAG Q-switched CW diode pumped Nd:YAG laser,” Opt. and Quant. Elec. 29, 429-433 (1997).
[4]A. AGNESI, S. DELL’ACQUA, and G. C. REALI, “1.5Watt passively Q-switched diode-pumped cw Nd:YAG laser,” opt. comm. 133, 211-215 (1997).
[5] D. Y Tang, S. P. Ng, L. J. Qin, and X. L. Meng, “Deterministic chaos in a diode-pumped Nd:YAG laser passively Q switched by a Cr4+:YAG crystal,” Opt. lett. 28, 325-327 (2003).
[6] M.-D. Wei, and W.-F. Hsieh, “Cavity-configuration-dependent nonlinear dynamics in Kerr-lens mode-locked lasers” J. Opt. Soc.Am. B 17, 1335-1342 (2000).
[7] K. Tanii, M. Tachikawa, T. Tohei, F.-L. Hong, and T. Shimizu, “Instability and chaos in two-mode oscillation of a CO2 laser modulated by a saturable absorber” Phys. Rev. A 43, 1498-1501(1991).
[8] K. Tanii, T. Tohei, T. Sugawara, M. Tachikawa, and T. Shimizu, “Two different routes to chaos in a two-mode CO2 laser with a saturable absorber” Phys. Rev. E 59, 1600-1604 (1999).
[9] M. Brambilla, F. Battipede, L. A. Lugiato, V. Penna, F. Prati, C Tamm, and C. O. Weiss, “Transverse laser patterns. I. Phase singularity crystals” Phys. Rev. A 43, 5090-5113 (1991).
[10] G. Slekys, K. Staliunas, and M. F. H. Tarroja, C.O. Weiss “Cooperative frequency locking and tristability in a class-B laser” Appl. Phys. B 59,11-17 (1994).
[11] M. Tachikawa, F.-L. Hong, K. Tanii, and T. Shimizu, “Determinsitic Chaos in a Passive Q-switching Pulsation of a CO2 Laser with Saturable Absorber” Phys. Rev. Letts. 60, 2266-2268 (1988).
[12] A. Siegman, Lasers (University Science, Mill Valley, Calif., 1986),ch.26
[13] Y. S. choi, “Saturation characteristics of Cr4+:YAG crystal and dye films for passive Q switches” Appl. Opt. 40, 5417-5422 (2001).

[14] J. Degnan, “Optimization of Passively Q-Switched Lasers,” IEEE J. Quant. Elec. 31, 1890-1901 (1995).
[15] Q. Zhang, B. Ozygus, and H. Weber “Degeneration effects in laser cavities” Eur. Phys. J. AP 6, 293-298 (1999).
[16] C.-H. Chen, M.-D. Wei, and W.-F. Hsieh, “Beam-Propagation-dominant instability in an axially pumped solid-state laser near degenerate resonator configuration” J. Opt. Soc. Am. B 18, 1076-1083 (2001).
[17] C. C. Davis, Laser and Electro-Optics, (The Press Syndicate of the University OF CAMBRIDGE, United Kingdom, 2000),ch.16
[18] G. Anstett, M. Nittmann, A. Borsutzky, and R. Wallenstein “Experimental investigation and numerical simulation of the spatio-temporal dynamics of nanosecond pulses in Q-switched Nd:YAG lasers” Appl. Phys. B 76, 833-838(2003).
[19] A. Cutolo, M. D. Noce, and L. Zeni, “Real-time measurement of transverse-mode-mixing effects in a Q-switched Nd:Yag laser” Appl. Opt. 35, 2544-2547 (1996).
[20] T. Kimura, and K. Otsuka, “Thermal Effects of a Continuously Pumped Nd3+:YAG Laser” IEEE Journal of Quantum Electronics 7, 403-407 (1971).
[21] L. A. Lugiato, G. L. Oppo, J. R. Tredicce, L. M. Narducci, and M. A. Pernigo, “Instabilities and spatial complexity in a laser” J. Opt. Soc. Am.B 7, 1019-1033 (1990).
QRCODE
 
 
 
 
 
                                                                                                                                                                                                                                                                                                                                                                                                               
第一頁 上一頁 下一頁 最後一頁 top