高功率鎖模摻鉺光纖雷射

Abstract

在本論文中，我們在實驗上成功的架設了一套偏振旋轉疊加波鎖模摻鉺光纖雷射，其工作波長為1550nm，基本脈衝重複率為52.3MHz，平均功率為4mW。此雷射的脈衝，經過啁啾脈衝放大的技術後，送入摻鉺光纖放大器，把雷射的平均功率放大至1.7W，脈衝寬度拉寬為47.8ps。之後藉由多模光纖對脈衝作為第一級壓縮後再使用單模光纖作為第二級壓縮使此系統能夠產生脈衝寬度308fs且平均功率為1.1W的脈衝雷射。

In this thesis we have successfully built up a polarization additive pulse mode-locked Er-fiber laser. The fiber laser can produce a stable pulse with a 52.3MHz repletion rate, 1550nm wavelength, 4mW. We used chirped pulse amplification technique to amplify the average power of fiber laser up to 1.7W. The output pulse is with a 47.8ps pulse width and can be compressed by a multi-mode fiber for first compression and by a single mode fiber for second pulse compression. It can produce pulses with 308fs pulse width and 1.1W average power.