未來展望

在未來的工作中，可以在此系統中加入半導體的飽和吸收體，利 用其特性降低橫向模態的耦合，期望達成完美的連續性的自鎖模輸 出。在近期發表的論文當中，也發現有人利用半導體的飽和吸收體並 且以架設 V 型共振腔的型式，成功的將光激發式的半導體雷射產生鎖 模現象，並且將雷射的脈衝寬度壓縮至 60 飛秒(femtosecond)。因為半 導體增射介質被激發時含有大範圍的螢光光譜，因此我們認為如果可 以將這些模態都加以控制而產生鎖模現象，應該可以將脈衝的寬度壓 縮至飛秒雷射的等級。

而研究的另一個方向則是可以利用雙折射濾光 鏡(birefringence filter)架設在雷射共振腔的中間，並且利用溫度的調控，控制雙折射濾 光鏡過濾的波長，將大範圍的螢光光譜縮小，只留下特定的波長通過，

在螢光光譜縮小的狀況下，就有機會消除高階橫模的耦合進而產生良 好連續輸出的自鎖模雷射。

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