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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 石明豐 | |
dc.contributor.author | "To, Orchid" | en |
dc.contributor.author | 杜台蘭 | zh_TW |
dc.date.accessioned | 2021-06-14T16:47:24Z | - |
dc.date.available | 2008-08-04 | |
dc.date.copyright | 2008-08-04 | |
dc.date.issued | 2008 | |
dc.date.submitted | 2008-07-29 | |
dc.identifier.citation | [1] R. W. Boyd, Nonlinear optics (Amsterdam ; Boston : Academic Press, 2003).
[2] M. C. T. Bahaa E. A. Saleh, Fundamentals of photonics (Hoboken, N.J. : Wiley-Interscience, 2007). [3] M.-F. Shih, (Ph. D. diss., Princeton University, 1998). [4] T. B. F. Benjamin, J.E. , The Journal of Fluid Mechanics 27, 417 (1967). [5] T. Taniuti, and H. Washimi, Physical Review Letters 21, 209 (1968). [6] E. M. Dianov et al., Opt. Lett. 14, 1008 (1989). [7] G. P. Agrawal, Nonlinear fiber optics (San Diego : Academic Press, 2001). [8] M. D. Iturbe-Castillo et al., Opt. Lett. 20, 1853 (1995). [9] M. I. Carvalho, S. R. Singh, and D. N. Christodoulides, optics communications 126, 167 (1996). [10] C.-C. Jeng, (Ph. D. diss., Nation Taiwan University, 2004). [11] M. Remoissenet, Waves called solitons : concepts and experiments (Berlin ; New York : Springer, 1999). [12] M.-F. Shih et al., Physical Review Letters 88, 133902 (2002). [13] A. V. Mamaev et al., Physical Review A 54, 870 (1996). [14] M. A. Padgett, L. , Contemporary Physics 41, 275 (2000). [15] R. M. N. R. Heckenberg, C. P. Smith, H. Rubinsztein-Dunlop and M. J. Wegener, Optical and Quantum Electronics 24, S951 (1992). [16] F. W. Sheu, and M. F. Shih, optics communications 278, 187 (2007). | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/40429 | - |
dc.description.abstract | 調制不穩定性〈modulation instability〉是許多領域所關注的議題,諸如流體動力學、電漿物理以及光學。在光學中,調變不穩定性將使得微小的振幅或相位上的擾動被放大;也就是一道強度均勻分布的平面光,會因為其上的微小雜訊受非線性效應和散射的交互作用,而使得強度相對較大的部分變得更大,因此強度分布發生變化,出現亮條紋。當非線性超過某個臨界點,原先的亮條紋會變成較小的亮點,這就是光學紊流〈optical turbulence〉。本論文主要在探討由調制不穩定性轉變到光學紊流時,所會發生的有趣現象。
第一章介紹實驗中使用的光折變〈photorefractive〉物質機制。對於調制不穩定性細節的介紹與相關的研究整理在第二章。在第三章將呈現對應到不同電壓與光強度時,從調制不穩定性相變至光學紊流的圖形與動態變化。最後再對實驗中觀察到的有趣現象〈如干涉條紋變細及分岔〉做討論。 | zh_TW |
dc.description.abstract | Modulation instability, or Benjamin-Feir instability, is a remarkable phenomenon that attracts great attention in many branches of nonlinear science including fluid dynamics, plasma physics, and optics. In optics, because of MI, small amplitude and phase fluctuations from noise are likely to be amplified as a result of the interplay between nonlinearity and diffraction. Therefore, a broad light beam tends to disintegrate into filaments. When the value of the nonlinearity exceeds a threshold, the beam breaks up into light spots, which is called optical turbulence. In this dissertation, we present interesting property of the transition from modulation instability to optical turbulence.
The organization of the dissertation is as following: In chapter one, we illustrate the mechanism of photorefractive media which is used in our experiment. The detailed introduction of MI and the related studies are summarized in chapter two. Then, we focus on how the external applied voltage and the incident optical intensity result in the transition of the pattern formation and the dynamics from modulation instability to optical turbulence. At last we have a discussion about our work and give a summary in the end. | en |
dc.description.provenance | Made available in DSpace on 2021-06-14T16:47:24Z (GMT). No. of bitstreams: 1 ntu-97-R95222058-1.pdf: 1422784 bytes, checksum: 8d4d4be70fe4965550c9cf0bde9a214b (MD5) Previous issue date: 2008 | en |
dc.description.tableofcontents | Abstract ii
中文摘要 iii Constants v List of Figures vi Chapter 1 Basic Concepts 1 1.1. Nonlinear Optics 1 1.2. Optical Kerr Effect 2 1.3. Photorefractive Effect 5 Chapter 2 Modulation Instability 9 2.1. Introduction 9 2.2. MI in The Non-instantaneous Media Due to Dynamic Noise 11 2.3. Theory of The Growth of MI in The Non-instantaneous Media 14 Chapter 3 Experiments of The Transition from Spatiotemporal Modulation Instability to Optical Turbulence 17 3.1. Introduction 17 3.2. Experimental Setup 17 3.3. Experimental Result about The Transition 19 3.3.1. The Striation Pattern 19 3.3.2. The MI Pattern 19 3.3.3. The Optical Turbulence Pattern 28 3.4. The Verification of The Phase singularity 30 3.5. Discussion 33 Chapter 4 Summary 35 Bibiography 37 | |
dc.language.iso | en | |
dc.title | 由時空調制不穩定性至光學紊流的相變化 | zh_TW |
dc.title | The Transition from Spatiotemporal Modulation Instability to Optical Turbulence | en |
dc.type | Thesis | |
dc.date.schoolyear | 96-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 曹培熙,蔡定平 | |
dc.subject.keyword | 非線性光學,調制不穩定性,光學紊流,光折變物質,非立即反應,自聚焦, | zh_TW |
dc.subject.keyword | nonlinear optics,modulation instability,optical turbulence,photorefractive media,non-instantaneous,self-focusing, | en |
dc.relation.page | 36 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2008-07-31 | |
dc.contributor.author-college | 理學院 | zh_TW |
dc.contributor.author-dept | 物理研究所 | zh_TW |
顯示於系所單位: | 物理學系 |
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