本論文研究摻鐿可飽和被動式全光纖脈衝雷射系統的特性。使用915nm的laser diode的連續波雷射作為驅動源，設置雙共振腔系統在976nm與1030nm，使用模態場不匹配的技術加速可飽和吸收體自平衡機制，架設出全光纖雷射系統。實驗分兩部分:(1)藉由縮短共振腔長度量測到比較短的脈衝寬度藉以提高脈衝鋒值(2)使用FBG把原本架構散失的能量重新利用，提高系統效率，同時兼具穩定laser diode的波長的功能。在輸入功率197mW時，即可產生脈衝能量0.3574µJ，重複率101kHz，脈衝寬度72ns，脈衝峰值4.963W的976nm雷射。

In this paper, the previous results of the laboratory are studied to study the characteristics of ytterbium-saturated, passive, all-fiber pulsed laser systems. A 915 nm laser diode was used as the driving source for the continuous wave laser and the dual resonator system was set at 976 nm and 1030 nm. At the same time, the modal field mismatch technique is used to accelerate the self-balancing mechanism of saturated absorber, and the all-fiber laser system is set up. In addition, the use of Matlab simulation of the laser equation, auxiliary simulation of the resonant cavity of the behavior. The influence of the parameters on the Ng value and the Na value is discussed, and an optimized result is obtained in the system. Experiments is divided into two parts: (1) by reducing the resonant cavity length to measure the better pulse characteristics and (2) the use of FBG to restore the original structure of the energy reuse, improve system efficiency, while both stable laser diode wavelength The function is equivalent to the third resonator of the system. When the input power is 197mW, it can generate 976nm laser with pulse energy of 0.3574μJ, repetition rate of 101kHz, pulse width of 72ns and pulse peak of 4.963W.

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