操作在全正常色散之鎖模摻鐿光纖雷射

在此篇論文中，我們在摻鐿光纖雷射(YDFL)研究一種利用非線性偏振演化(NPE)的技術來產生鎖模超短脈衝的雷射動態。在一被動環狀共振腔結構中，藉由改變偏振控制器旋轉之角度或調整泵激光源之功率，可產生Q開關鎖模 (QML)、連續波鎖模 (CW-ML)，甚至脈衝分裂。另一方面，我們將一個半導體飽和吸收反射鏡(SESAM)置於腔內，則能得到諧波鎖模(HML)，並且亦能夠透過改變泵激光源之功率或旋轉偏振控制器而得到較高的重複頻率。我們證實在正常色散的摻鐿光纖雷射共振腔中具有多種可調特性。

關鍵字

Q開關；鎖模；摻鐿光纖；半導體飽和吸收反射鏡

並列摘要

In this paper, we investigate the pulse dynamics in a mode-locked ytterbium-doped fiber laser (YDFL) by the pulse-shaping based on nonlinear polarization evolution (NPE). By changing the orientation of the polarization controller or adjusting the pump power, Q-switched mode-locking (QML), continuous-wave mode-locking (CW-ML), or pulse splitting can be achieved in the passively mode-locked fiber laser with a unidirectional ring cavity. On the other hand, when a semiconductor saturable absorber (SESAM) is inserted in the laser cavity, harmonic mode-locking (HML) pulse can be obtained to generate higher repetition rate pulses by changing the pump power or rotating the polarization controller. We have obtained a versatile tunable in ytterbium-doped fiber laser operation in normal group velocity dispersion (GVD) region.

並列關鍵字

Q-switching ； mode-locking ； ytterbium-doped fiber ； SESAM

參考文獻

[1]T. Kamiya, F. Saito, O. Wada, and H. Yajima (ed) Femtosecond Technology: From Basic Research to Application Technology, Part III, pp. 59–174 (Springer, Berlin, 1999).

[2]M. E. Ferman, A. Galvanauskas, and G. Sucha (ed) Ultrafast Lasers: Technology and Applications (2003).

[3]Keller U 2003 Nature 424 831.

[4]F. Ilday, J. Chen, and F. Kärtner, “Generation of sub-100-fs pulses at up to 200 MHz repetition rate from a passively mode-locked Yb-doped fiber laser,” Optics Express, Vol. 13, Issue 7, pp. 2716-2721 (2005).

[5]K. Tamura, J. Jacobson, H. A. Haus, E. P. Ippen, and J. G. Fujimoto, “77-fs pulse generation from a stretched-pulse mode-locked all-fiber ring laser,” Opt. Lett. 18, pp. 1080-1082 (1993).

國際替代計量

操作在全正常色散之鎖模摻鐿光纖雷射

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