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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 林恭如 | |
dc.contributor.author | Yung-Hsiang Lin | en |
dc.contributor.author | 林泳詳 | zh_TW |
dc.date.accessioned | 2021-06-16T13:14:41Z | - |
dc.date.available | 2018-08-06 | |
dc.date.copyright | 2013-08-06 | |
dc.date.issued | 2013 | |
dc.date.submitted | 2013-07-29 | |
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dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/61825 | - |
dc.description.abstract | 我們首先使用碳系材料奈米粒子作為被動鎖模摻鉺光纖雷射中的飽和吸收體,其中包括石墨奈米粒子、炭粉奈米粒子與碳黑奈米粒子等。我們以研磨塊材的方式製作奈米粒子,再將奈米粒子直接塗抹於單模光纖端面上,即可將此飽和吸收體置入於雷射共振腔內,藉此產生被動鎖模摻鉺光纖雷射。初期,我們使用石墨奈米粒子搭配此種簡易的方法,只可產生皮秒級被動鎖模摻鉺光纖雷射。這是由於摻鉺光纖放大器的增益過小,以及石墨奈米粒子因自我聚集的效應而增大其體積,使得飽和吸收過大。因此,我們製作一高增益之摻鉺光纖雷射,並發明依簡易之塗抹-擦拭-剝落法以降低石墨奈米粒子之體積(或層數)。藉此,我們能將此類鎖模雷射之脈衝壓縮至375 fs。此外,我們以拉曼光譜、X射線繞射光譜、與X射線光電子光譜進行奈米材笑之光電特性量射,並使用一脈衝雷射測量其非線性吸收特性。我們也使用理論模擬詳細地分析雷射動態行為。之後,我們也使用其他碳矽材料奈米粒子作為飽和吸收體,並以上述優化之方法,成功地獲得百飛級被動鎖模摻鉺光纖雷射。藉由理論分析,我們發現在高功率增益的操作之下,雷射環腔內會產生極高的自相位調變效應。如果此效應能與群速度延遲色散效應互相補償,即可進一步地壓縮脈衝寬度。我們也嘗試將石磨奈米粒子虹吸於光子晶體光纖中,以產生被動鎖模摻鉺光纖雷射。為了獲得小尺寸且體積均勻之石磨奈米粒子,我們使用一化學電解法製作石墨奈米粒子。使用此漸消波反應方法 能提高非線性反應長度 並可避免因腔內光束直接穿透而破壞飽和吸收體。 | zh_TW |
dc.description.abstract | The nano-scale carbon based materials are firstly demonstrated to be the saturable absorbers for passively mode-locked EDFLs, including graphite nano-particle, charcoal nano-particle and carbon black nano-particle. The structural properties of the nano-particles are investigated by Raman scattering spectroscopy, XRD and XPS. In the first stage, the passively mode-locked EDFL with graphite nano-particles can only generate the ps-degree pulsewidth. After the cavity gain is enhanced by a high-gain EDFA, and the particle size (or layer number) is reduced by using an imprting-exfoliation-wiping method, the pulsewidth can be compressed to 375 fs. The cooperation of GDD and SPM effects has a great impact on the pulse formation than the SAM effect of saturable absorber. In this condition, the pulse can be further compressed by the cooperation of GDD and SPM effects. After the investigation of graphite nano-particle, the passively mode-locked EDFL with charcoal nano-partilce is also improved to hundreds fs-degree. Although the mode-locking ability of each carbon based material is different, however, with the favor of negative GDD and strong SPM, the hundreds fs-degree passively mode-locked EDFLs can be obtained. The evanescent wave interaction of saturable absorber is employed to produce the passively mode-locked EDFL. The electrochemically exfoliated graphite nano-particles are siphoned into the photonic crystal fiber to induce the evanescent wave interaction. By using this method, the damage of saturable absorber under high intracavity power operation can be avioded, and the nonlinear interaction can be also lengthened. | en |
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dc.description.tableofcontents | 口試委員會審定書 #
誌謝 中文摘要 i ABSTRACT iii CONTENTS iv LIST OF FIGURES ix LIST OF TABLES xv Chapter 1 Introduction 1 1.1 Passive Mode-Locking.............................1 1.2 Graphene based Saturable Absorbers...............3 1.3 Fabrications of Graphene based Saturable Absorber:Chemical and Physical Methods............4 1.4 Motivation........................................5 1.5 Organization of Thesis............................6 Chapter 2 Charcoal Nano-particle Based Saturable Absorber Passively Mode-Locked Erbium Doped Fiber Ring Laser............................................9 2.1 Introduction......................................9 2.2 Fabrication of Charcoal Nano-Particle and The Configuration of The Passively Mode-Locked Erbium Doped Fiber Ring Laser............................10 2.3 Results and Discussion..........................11 2.3.1 Structural Properties and Optical Properties of charcoal Nano-Particle............................11 2.3.1.1 Raman Scattering Spectrum.......................11 2.3.1.2 X-Ray Diffraction Spectrum......................13 2.3.1.3 Linear Transmittance and Absorbance.............14 2.3.1.4 Nonlinear Transmittance and Absorbance...........15 2.3.2 Passively Mode-Locked EDFL Performances.........17 2.3.2.1 Pulsewidth Variation with Different Feedback Ratio...........................................17 2.3.2.2 Connection Loss Reduction by Direct Brush Method19 2.3.3 Theoretical Simulation of Passively Mode-Locked EDFL..............................................21 2.4 Summary.........................................24 Chapter 3 Graphite Nano-particle Based Saturable Absorber Passively Mode-Locked Erbium Doped Fiber Ring Laser...........................................26 3.1 Introduction....................................26 3.2 Fabrication of Graphite Nano-Particle and The Configuration of The Passively Mode-Locked Erbium Doped Fiber Ring Laser............................27 3.3 Results and Discussion..........................28 3.3.1 Structural Properties and Optical Properties of Graphite Nano-Particle............................28 3.3.1.1 Raman Scattering Spectrum.......................28 3.3.1.2 X-Ray Diffraction Spectrum......................29 3.3.1.3 Linear Transmittance and Absorbance.............30 3.3.1.4 Nonlinear Transmittance and Absorbance..........31 3.3.2 Passively Mode-Locked EDFL Performances.........32 3.4 Summary.........................................34 Chapter 4 Femtosecond-degree Fiber Soliton Laser Mode- Locked by Multiple Exfoliated Charcoal Nano- Particles.......................................36 4.1 Introduction....................................36 4.2 Experimental....................................36 4.2.1 Establishment of High-Gain EDFA.................36 4.2.2 Imprinting-Exfoliation-Wiping Method............37 4.3 Results and Discussion..........................38 4.3.1 X-ray Photoelectron Spectrum of Charcoal Nano Particle.........................................38 4.3.2 Nonlinear Transmittances and Absorbances of the Exfoliated Charcoal Nano-Particles ..............39 4.3.3 Passively Mode-Locked EDFL Performances with the Exfoliated Charcoal Nano-Particles...............40 4.3.4 Pulse Compression by the Cooperation of Group Delay Dispersion and Self-Phase Modulation Effects..........................................43 4.4 Summary.........................................46 Chapter 5 Femtosecond-degree Fiber Soliton Laser Mode- Locked by Multiple Exfoliated Graphite Nano- Particles.......................................47 5.1 Introduction....................................47 5.2 Experimental....................................48 5.2.1 Establishment of High-Gain EDFL.................48 5.2.2 Imprinting-Exfoliation-Wiping Method............48 5.3 Results and Discussion..........................50 5.3.1 Raman Spectra of the Exfoliated Graphite Nano- Particles.........................................50 5.3.2 Nonlinear Transmittances and Absorbances of the Exfoliated Graphite Nano-Particles................52 5.3.3 Passively Mode-Locked EDFL Performances with the Exfoliated Graphite Nano-Particles................53 5.3.4 Dispersion Compensation.........................61 5.4 Summary.........................................61 Chapter 6 Nano-Scale Carbon Based Saturable Absorbers for Passively Mode-Locked Erbium-Doped Fiber Laser...........................................63 6.1 Introduction....................................63 6.2 Experimental....................................64 6.3 Results and Discussion..........................66 6.3.1 Raman Spectra and X-ray Diffraction Spectra of Nano-scale Carbon based Saturable Absorbers......66 6.3.2 Nonlinear Transmittance and Nonlinear Absorbance of Nano-scale Carbon based Saturable Absorbers...69 6.3.3 Passively mode-locked EDFLs with Nano-scale Carbon based Saturable Absorbers.................72 6.3.4 Pulse compression by the coexistences of GDD and SPM...............................................76 6.4 Summary.........................................80 Chapter 7 Electrochemical Exfoliated Graphite Nano- particle Embedded in Photonic Crystal Fiber for Passively Mode-Locking of Fiber Laser by Evanescent Wave Interaction.....................82 7.1 Introduction....................................82 7.2 Experimental....................................83 7.2.1 Electrochemically Exfoliated Graphite Nano- Particle in Photonic Crystal Fiber..............83 7.3 Results and Discussion..........................85 7.3.1 Raman Spectra of Electrochemically Exfoliated Graphite Nano-Particle..........................85 7.3.2 Linear Transmittance of Electrochemically Exfoliated Graphite Nano-Particle...............87 7.3.3 Nonlinear Transmittance and Nonlinear Absorbance of Electrochemically Exfoliated Graphite Nano- Particle........................................87 7.3.4 Passively Mode-Locked EDFL Performances.........91 7.4 Summary.........................................95 8. Conclusion......................................97 REFERENCE.................................................99 作者簡介 ...............................................110 Publication List.........................................111 | |
dc.language.iso | en | |
dc.title | 以奈米碳粉/石墨/石墨烯為飽和吸收體之
被動鎖模摻鉺光纖雷射 | zh_TW |
dc.title | Nano-Scale Charcoal/Graphite/Graphene Based Saturable
Absorbers for Passively Mode-Locked Erbium-Doped Fiber Lasers | en |
dc.type | Thesis | |
dc.date.schoolyear | 101-2 | |
dc.description.degree | 博士 | |
dc.contributor.oralexamcommittee | 黃升龍,何志浩,賴?杰,楊尚達,鄭木海 | |
dc.subject.keyword | 被動鎖模雷射,超快光纖雷射,石墨烯,石墨,碳粉,奈米結構,光固子鎖模雷射,群速度色散,自相位調變,摻鉺光纖, | zh_TW |
dc.subject.keyword | Passive mode-locking,Ultrafast fiber laser,Graphene,Graphite,Charcoal,Nano-structure,Soliton mode-locking,Group velocity dispersion,Self-phase modulation,Erbium-doped fiber., | en |
dc.relation.page | 116 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2013-07-30 | |
dc.contributor.author-college | 電機資訊學院 | zh_TW |
dc.contributor.author-dept | 光電工程學研究所 | zh_TW |
顯示於系所單位: | 光電工程學研究所 |
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