本論文探討泵源雷射系統調制所產生的雷射非線性動態行為及極端事件(extreme event)。用不同泵源激發光束大小來激發晶體，其共振腔的長度靠近簡併共振腔時，經由泵源的外加調制頻率接近鬆弛振盪頻率時，調制深度大於閾值雷射會產生混沌現象，我們發現此系統也會激發極端事件(強度大於平均值加四倍標準差)，產生極端事件的閥值與調制頻率有關，且實驗與模擬的結果相互吻合。

In this thesis, we discuss the nonlinear dynamics and extreme events in the pump-modulated laser system. We operate at the cavity length which is close to the transverse mode-degenerate configuration, and pump the gain medium by different pumping spot sizes. When the modulation frequency is close to the relaxation oscillation frequency, the chaotic regime can be observed when the modulation depth increases to a given threshold. And we also observe the extreme event in the solid-state laser system, and the threshold of the modulation depth for the extreme events relates to the modulation frequency, and the results of the experiment and simulation agree well with each other.

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