主震盪功率放大架構光纖雷射之研究

本論文研究主震盪功率放大架構之光纖雷射的建構，與其雷射脈衝輸出的特性。在雷射的架設上，種子脈衝的產生是藉由電光調制器調制半導體雷射二極體的輸出光來作為主震盪器，產生脈衝寬度5~80ns的雷射脈衝，再經由三級的光纖放大器進行放大，以得到高峰值功率的雷射脈衝。所架設的三級光纖放大器使用的光纖分別為：一般摻鉺光纖、高濃度摻鉺光纖、與雙重披覆層大模態面積鉺鐿共摻光纖，論文中將討論單獨各級光纖放大器與串接多級後放大器的輸出特性，如脈衝峰值功率與脈衝寬度，隨幫浦功率與脈衝重複率變化的情形。

關鍵字

光纖雷射；功率放大器；電光調制器

並列摘要

In this work, the configuration and the output properties of a master oscillator power amplifier fiber laser are studied. In the experiment, the master oscillator, which is formed by a semiconductor laser associated with an elector-optic modulator, produces the seed pulses with pulse duration from 5ns to 80ns. The laser pulse is amplified by three-stage fiber amplifier to increase its peak power. Three kinds of gain fiber, including general erbium-doped fiber, high concentration erbium-doped and erbium-ytterbium co-doped large-mode-area double cladding fiber, are used in the three-stage fiber amplifier. For the single-stage and multi-stage fiber amplifiers, the effects of pump power and pulse repetition rate on the pulse properties, including pulse peak power and pulse duration, are discussed.

並列關鍵字

fiber laser ； power amplifier ； electro-optic modulator

參考文獻

[1] T. Manzur and S. Bastien, “High power fiber laser/amplifier present & future,” Proc. SPIE, vol. 3945, pp. 240-257, 2000.

[2] C. J. Koester and E. Snitzer, "Amplification in a fiber laser," Appl. Opt., vol. 3, no. 10, pp. 1182-1186, 1964

[3] C. Randy Giles and E. Desurvire, “Modeling erbium-doped fiber amplifiers,” J. Lightwave Tech., vol. 18, no. 2, pp. 271-283, 1991.

[6] F. D. Teodoro, “Megawatt peak-power pulsed fiber sources,” Proc. SPIE, vol. 6261, pp. 62611N, 2006.

[7] K. Zoiros, T. Stathopoulos, K. Vlachos, A. Hatziefremidis, T. Houbavlis, T. Papakyriakopoulos and H. Avramopoulos, “Experimental and theoretical studies of a high repetition rate fiber laser, mode-locked by external optical modulation,” J. Opt. Comm., vol. 180, pp. 301-315, 2000.

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主震盪功率放大架構光纖雷射之研究

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