請用此 Handle URI 來引用此文件：
http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/98926完整後設資料紀錄
| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 黃升龍 | zh_TW |
| dc.contributor.advisor | Sheng-Lung Huang | en |
| dc.contributor.author | 齊豫萱 | zh_TW |
| dc.contributor.author | Yu-Hsuan Chi | en |
| dc.date.accessioned | 2025-08-20T16:18:42Z | - |
| dc.date.available | 2025-08-21 | - |
| dc.date.copyright | 2025-08-20 | - |
| dc.date.issued | 2025 | - |
| dc.date.submitted | 2025-08-13 | - |
| dc.identifier.citation | [1] S. R. Chinn, E. A. Swanson, and J. G. Fujimoto, “Optical coherence tomography using a frequency-tunable optical source,” Opt. Lett., vol. 22, pp. 340, 1997.
[2] J. Xu, X. Wei, L. Yu, C. Zhang, J. Xu, K. K. Y. Wong, and K. K. Tsia, “High-performance multi-megahertz optical coherence tomography based on amplified optical time-stretch,” Biomed. Opt. Express, vol. 6, pp. 1340–1350, 2015. [3] R. Huber, M. Wojtkowski, and J. G. Fujimoto, “Fourier Domain Mode Locking (FDML): A new laser operating regime and applications for optical coherence tomography,” Opt. Express, vol. 14(8), pp. 3225-3237, 2006. [4] K. F. Wall, and A. Sanchez, “Titanium sapphire lasers,” Linc. Lab. j., vol. 3, pp. 447, 1990. [5] S. L. Jacques, “Optical properties of biological tissues: a review,” Phys. Med. Biol., vol. 58, pp. R37, 2013. [6] P. B. Welander, “Epitaxial aluminum oxide thin films on niobium (110): A study of their growth and their use in superconducting tunnel-junctions,” Ph.D. dissertation, University of Illinois at Urbana-Champaign Graduate College, 2007 [7] Shinkosha, “Physical properties of sapphire,” [Online]. Available: https://www.shinkosha.com/english/techinfo/feature/physical-properties-of-sapphire/ [8] StackExchange, “Why don't molecules of ionic compounds exist?,” [Online]. Available: https://chemistry.stackexchange.com/questions/9730/why-dont-molecules-of-ionic-compounds-exist [9] RefractiveIndex.INFO, “Optical constants of Al2O3,” [Online]. Available: https://refractiveindex.info/?shelf=main&book=Al2O3&page=Malitson-e [10] F. Mila, R. Shiina, F. C. Zhang, A. Joshi, M. Ma, V. Anisimov, and T. M. Rice, “Orbitally degenerate spin-1 model for insulating V2O3,” Physical Review Letters, vol. 85, pp. 1714–1717, 1990 [11] K. F. Wall and A. Sanchez, “Titanium sapphire lasers,” Linc. Lab. J., vol. 3, pp. 447–462, 1990. [12] J. Ma, D. Maolu, and C. Qinghan, “A new absorption band of Ti-doped Al2O3 crystals after thermal annealing and γ-irradiation,” Zeitschrift für Naturforschung A, vol. 61, pp. 564–568, 2006. [13] E. Sorokin, “Solid-state materials for few-cycle pulse generation and amplification.” Top. Appl. Phys., Springer, vol. 95, 2004. [14] P. F. Moulton, “Spectroscopic and laser characteristics of Ti:Al2O3,” J. Opt. Soc., vol. 3, pp. 125–133, 1986. [15] P. Alberts, E. Stark, and G. Huber, “Continuous-wave laser operation and quantum efficiency of titanium-doped sapphire,” J. Opt. Soc., vol. 3, pp. 134–139, 1986. [16] R. L. Aggarwal, A. Sanchez, M. Stuppi, R. E. Fahey, A. J. Strauss, W. Rapoport, and C. P. Khattak, “Residual infrared absorption in as-grown and annealed crystals of Ti:Al2O3,” IEEE J. Quantum Electron., vol. 24, pp. 1003–1008, 1988. [17] E. R. Dobrovinskaya, L. A. Lytvynov, and V. Pishchik, “Sapphire: material, manufacturing, applications,” Springer Science & Business Media, 2009. [18] T. Danger, K. Petermann, and G. Huber, “Polarized and time-resolved measurements of excited-state absorption and stimulated emission in Ti:YAlO3 and Ti:Al2O3,” Appl. Phys. A, vol. 57, pp. 309–313, 1993. [19] J. S. Haggerty, “Production of fibers by a floating zone fiber drawing technique,” NTRS, No. ADL-73235, 1972. [20] J. Czochralski, “A new method for the measurement of the crystallization rate of metals,” Z. Phys. Chem., vol. 92, pp. 219–221, 1918. [21] H. Y. Lu, “Wavelength-Swept Ring Cavity Ti:sapphire Crystal Fiber Laser,” M.S. thesis, Graduate Institute of Photonics and Optoelectronics, National Taiwan University, 2023. [22] S. C. Wang, “Development and applications of glass-clad Ti:Al2O3 crystal fiber,” Ph.D. dissertation, Graduate Institute of Photonics and Optoelectronics, National Taiwan University, 2016. [23] T. I. Yang, “The study of near-infrared broadband single mode crystal fiber light sources,” Ph.D. dissertation, Graduate Institute of Photonics and Optoelectronics, National Taiwan University, 2021. [24] L. Wu, A. Wang, J. Wu, L. Wei, G. Zhu, and S. Ying, “Growth and laser properties of Ti:sapphire single crystal fibres,” Electron. Lett., vol. 31, pp. 1151–1152, 1995. [25] A. A. Anderson, R. W. Eason, L. M. B. Hickey, M. Jelinek, C. Grivas, D. S. Gill, and N. A. Vainos, “Ti:sapphire planar waveguide laser grown by pulsed laser deposition,” Opt. Lett., vol. 22, pp. 1556–1558, 1997. [26] A. Crunteanu, M. Pollnau, G. Jänchen, C. Hibert, P. Hoffmann, R. P. Salathé, R. W. Eason, C. Grivas, and D. P. Shepherd, “Ti:sapphire rib channel waveguide fabricated by reactive ion etching of a planar waveguide,” Appl. Phys. Lett., vol. 75, pp. 15–17, 2002. [27] L. Laversenne, P. Hoffmann, M. Pollnau, P. Moretti, and J. Mugnier, “Designable buried waveguides in sapphire by proton implantation,” Appl. Phys. Lett., vol. 85, pp. 5167–5169, 2004. [28] V. Apostolopoulos, L. Laversenne, T. Colomb, C. Depeursinge, R. P. Salathé, and M. Pollnau, “Femtosecond-irradiation-induced refractive-index changes and channel waveguiding in bulk Ti3+:sapphire,” Appl. Phys. Lett., vol. 85, pp. 1122–1124, 2004. [29] L. M. B. Hickey, V. Apostolopoulos, R. W. Eason, and J. S. Wilkinson, “Diffused Ti:sapphire channel-waveguide lasers,” J. Opt. Soc., vol. 21, pp. 1452–1462, 2004. [30] C. Grivas, D. P. Shepherd, R. W. Eason, L. Laversenne, P. Moretti, C. N. Borca, and M. Pollnau, “Room-temperature continuous-wave operation of Ti:sapphire buried channel-waveguide lasers fabricated via proton implantation,” Opt. Lett., vol. 31, pp. 3450–3452, 2006. [31] C. Grivas, C. Corbari, G. Brambilla, and P. G. Lagoudakis, “Tunable, continuous-wave Ti:sapphire channel waveguide lasers written by femtosecond and picosecond laser pulses,” Opt. Lett., vol. 37, pp. 4630–4632, 2012. [32] J. H. Wang, “The study of Ti:sapphire crystal fiber based wavelength swept laser,” M.S. thesis, Graduate Institute of Photonics and Optoelectronics, National Taiwan University, 2018 [33] D. Y. Jheng, K. Y. Hsu, Y. C. Liang, and S. L. Huang, “Broadly tunable and low-threshold Cr4+:YAG crystal fiber laser,” IEEE J. Quantum Eletron., vol. 21, pp. 16–23, 2014. [34] C. C. Lee, “Thin film optics and coating technology,” Yi Hsien Publishing Co., 2009. [35] A. Macleod and C. Clark, “Coating design with the Essential Macleod,” Thin Film Center Inc, 2012. [36] JEOL, “JEBG BS-60/JST BS-ICE Series Electron Beam Sources and Power Supplies brochure,” [Online]. Available: https://www.jeolusa.com/Portals/2/brochures/JEBG%20BS-60_JST%20BS-ICE_Series%20Electron%20Beam%20Sources%20and%20Power%20Supplies%20Brochure.pdf. [37] H. K. Pulker, “Coating on glass,” Chap7, Elsevier sci., 1984. [38] J. C. Manifacier, J. Gasiot, and J. P. Fillard, “A simple method for determination of the optical constant n, k and the thickness of weekly absorbing thin films,” J. Phys. E: Sci. Instrum., vol. 9, pp. 1002–1004, 1976. [39] B. Rajawa, W. Ahmed, M. Venkatapathi, G. Gregori, F. Jin, J. Soos, S. Trivedi, and J. P. Robinson, “AOTF-based system for image cytometry,” Proceedings of SPIE - Spectral Imaging: Instrumentation, Applications, and Analysis III, vol. 5694, pp.16–23, 2005. [40] A. Cucinotta, S. Selleri, L. Vincetti, and M. Zoboli, “Numerical and experimental analysis of erbium-doped fiber linear cavity lasers,” Opt. Commun., vol. 156, no. 4–6, pp. 264–270, 1998. [41] J. M. Liu, “Photonic devices,” Cambridge, 2005. [42] Semrock, “532 nm laser BrightLine® single-edge super-resolution / TIRF dichroic beamsplitter, Part number: Di03-R532-t1-25x36,” [Online]. Available: https://www.semrock.com/FilterDetails.aspx?id=Di03-R532-t1-25x36. [43] Thorlabs, “PF10-03-P01 - Ø1" Protected Silver Mirror,” [Online]. Available: https://www.thorlabs.com/thorproduct.cfm?partnumber=PF10-03-P01. [44] Newport, “Aspheric objective lens, 60x, 2.8 mm EFL, 600-1050 nm,” [Online]. Available: https://www.newport.com/p/5721-B-H. [45] Newport, “Aspheric Objective Lens, 10x, 15.3 mm EFL, 600-1050 nm,” [Online]. Available: https://www.newport.com/p/5726-B-H. [46] K. Iizuka, “Elements of photonics, volume I: In free space and special media,” John Wiley & Sons, vol. 41, 2002. [47] S. G. Hanson, M. L. Jakobsen, and H. T. Yura, “Complex-valued ABCD matrices and speckle metrology,” Springer Ser. Opt. Sci., vol. 198, 2016 | - |
| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/98926 | - |
| dc.description.abstract | 光學同調斷層掃描術(optical coherence tomography; OCT)為一種非侵入性且具備高解析度的光學成像技術，廣泛應用於醫療診斷與組織分析。其中，掃頻式光學同調斷層掃描術能更快速地獲取組織的深度資訊，其成像品質與掃描速度高度依賴光源的特性，尤其是掃頻雷射的掃描速率與光譜頻寬。傅立葉域鎖模(Fourier-domain mode locking; FDML)技術因能突破傳統掃頻雷射在掃描速率與頻寬之間的限制，成為實現高速且高解析度成像的重要關鍵。本研究旨在建構一套具備傅立葉域鎖模潛力的高速掃頻雷射系統，期望為未來結合光學同調斷層掃描術成像應用奠定基礎。摻鈦藍寶石材料具備中心波長780 nm、3 dB頻寬達180 nm的螢光光譜，落於生物組織吸收較低的波段，適合作為生醫量測系統之光源。本實驗室利用雷射加熱基座長晶法生長之摻鈦藍寶石晶體光纖直徑僅16 μm，衰減係數低至0.017 cm-1，具低傳輸損耗與高表面積對體積比，可有效提升散熱效率，助於達到低閥值且高效率的雷射。
本研究以此晶體光纖為增益介質，透過光學模擬分析，找出能實現穩定雷射共振腔的條件，並成功建立環形共振腔雷射系統，雷射閥值為645 mW，斜線效率為0.11%，並以數值模型進行擬合，計算得腔體總增益達8.4 dB。接著嘗試導入聲光可調式濾波器(acousto-optic tunable filter; AOTF)作為高速掃頻元件，其無機械結構作動、高速響應等優勢，理論上可實現與腔長相匹配之掃頻速率，進而達到傅立葉域鎖模雷射所需的條件。 然而，實際將聲光可調式濾波器整合至環形共振腔時，由於未對聲光可調式濾波器有足夠瞭解，導致系統無法產生雷射輸出。為深入探討其可行性，本研究進一步改以線形共振腔架構進行實驗，對聲光可調式濾波器之出光功率進行分析。同時，以氦氖雷射為光源搭配偏振態控制元件，探討其對繞射效率的影響。實驗結果顯示，若欲實現聲光可調式濾波器的高速掃頻雷射，未來需更精確控制光源偏振特性，並強化濾波器與共振腔系統之整合設計，以降低損耗並提升系統整體效能。 | zh_TW |
| dc.description.abstract | Optical coherence tomography (OCT) is a non-invasive, high-resolution imaging technique widely used in medical diagnostics. Swept-source optical coherence tomography enables faster depth scanning, with performance highly dependent on the light source, especially the sweep rate and spectral bandwidth of the laser. Fourier-domain mode-locking (FDML) technology addresses the trade-off between sweep speed and bandwidth in conventional lasers, making it ideal for high-speed and high-resolution imaging systems. This study aims to construct an FDML laser system, serving as a foundation for future integration with OCT. Ti:sapphire is selected as the gain medium due to its broad fluorescence spectrum centered at 780 nm, with a 3 dB bandwidth of 180 nm, falling within a biologically low absorption window. This makes it highly suitable as a light source for biomedical applications. The Ti:sapphire crystal fiber used in this study was fabricated via a laser-heated pedestal growth (LHPG) method. It features a core diameter of only 16 μm and a low attenuation coefficient of 0.017 cm⁻¹, providing low transmission loss and a high surface-area-to-volume ratio that improves thermal dissipation, thereby enabling low threshold and high-efficiency laser operation.
Optical simulations were conducted to determine the conditions for stable laser resonance, and a ring cavity laser system was successfully constructed. The laser threshold was 645 mW, with a slope efficiency of 0.11%, and the total cavity gain was estimated to be 8.4 dB through numerical modeling. An acousto-optic tunable filter was introduced for high-speed wavelength sweeping, which theoretically enables synchronization of the sweep rate with the cavity round-trip time, thus meeting the requirements of FDML. However, practical integration of the acousto-optic tunable filter into the ring cavity failed to generate laser output, due to insufficient understanding of the filter’s behavior. To investigate its feasibility further, a linear cavity configuration was adopted, and the output power of the filter was analyzed. Additionally, experiments using a helium-neon laser and polarization control components revealed the critical role of polarization in achieving efficient diffraction. These findings highlight the need for precise polarization control and improved cavity-filter integration to realize a functional high-speed swept laser system for future optical coherence tomography applications. | en |
| dc.description.provenance | Submitted by admin ntu (admin@lib.ntu.edu.tw) on 2025-08-20T16:18:42Z No. of bitstreams: 0 | en |
| dc.description.provenance | Made available in DSpace on 2025-08-20T16:18:42Z (GMT). No. of bitstreams: 0 | en |
| dc.description.tableofcontents | 摘要 I
Abstract II 目次 III 圖次 IV 表次 VII 第一章 緒論及研究動機 1 第二章 玻璃纖衣之摻鈦藍寶石晶體光纖主動元件 5 2.1 摻鈦藍寶石晶體特性 5 2.2 晶體光纖製作流程 12 2.3 晶體光纖樣本處理 17 2.4 晶體光纖之光學特性 20 第三章 晶體光纖雷射之製備與相關元件 25 3.1 光學薄膜設計之原理 25 3.2 光學薄膜製備 29 3.3 聲光可調式濾波器 38 第四章 半導體雷射幫浦摻鈦藍寶石晶體光纖雷射系統 40 4.1 摻鈦藍寶石晶體光纖雷射理論模型 40 4.2 環形共振腔摻鈦藍寶石晶體光纖雷射架構及模擬 44 4.3 環形共振腔摻鈦藍寶石晶體光纖雷射結果 52 第五章 聲光可調式濾波器於摻鈦藍寶石晶體光纖雷射分析 54 5.1 環形共振腔增益與損耗分析 54 5.2 聲光可調式濾波器於環形共振腔之分析與探討 60 5.3 聲光可調式濾波器於線形共振腔之分析與探討 62 第六章 結論與未來展望 70 6.1 結論 70 6.2 未來展望 71 參考文獻 72 | - |
| dc.language.iso | zh_TW | - |
| dc.subject | 晶體光纖 | zh_TW |
| dc.subject | 摻鈦藍寶石晶體 | zh_TW |
| dc.subject | 傅立葉域鎖模 | zh_TW |
| dc.subject | 聲光可調式濾波器 | zh_TW |
| dc.subject | 環形共振腔雷射 | zh_TW |
| dc.subject | ring cavity laser | en |
| dc.subject | acousto-optic tunable filter | en |
| dc.subject | fourier- domain mode-locking II | en |
| dc.subject | crystal fiber | en |
| dc.subject | Ti:sapphire crystal | en |
| dc.title | 聲光可調式濾波器於環腔摻鈦藍寶石晶體光纖雷射之研究 | zh_TW |
| dc.title | The study of acousto-optic tunable filter in ring cavity Ti:sapphire crystal fiber laser | en |
| dc.type | Thesis | - |
| dc.date.schoolyear | 113-2 | - |
| dc.description.degree | 碩士 | - |
| dc.contributor.oralexamcommittee | 吳育任;李穎玟 | zh_TW |
| dc.contributor.oralexamcommittee | Yuh-Renn Wu;Yin-Wen Lee | en |
| dc.subject.keyword | 摻鈦藍寶石晶體,晶體光纖,環形共振腔雷射,聲光可調式濾波器,傅立葉域鎖模, | zh_TW |
| dc.subject.keyword | Ti:sapphire crystal,crystal fiber,ring cavity laser,acousto-optic tunable filter,fourier- domain mode-locking II, | en |
| dc.relation.page | 75 | - |
| dc.identifier.doi | 10.6342/NTU202504182 | - |
| dc.rights.note | 同意授權(限校園內公開) | - |
| dc.date.accepted | 2025-08-14 | - |
| dc.contributor.author-college | 電機資訊學院 | - |
| dc.contributor.author-dept | 光電工程學研究所 | - |
| dc.date.embargo-lift | 2025-08-21 | - |
| 顯示於系所單位： | 光電工程學研究所 | |
文件中的檔案：
| 檔案 | 大小 | 格式 | |
|---|---|---|---|
| ntu-113-2.pdf 授權僅限NTU校內IP使用（校園外請利用VPN校外連線服務） | 15.17 MB | Adobe PDF |
系統中的文件，除了特別指名其著作權條款之外，均受到著作權保護，並且保留所有的權利。