Department of Photonics & Institute of Electro-Optical Engineering, National Chiao Tung University, Hsinchu, Taiwan.
Opt Lett. 2013 Mar 15;38(6):845-7. doi: 10.1364/OL.38.000845.
We report the generation of passively harmonic mode-locked pulses using a 1.06 μm semiconductor optical amplifier (SOA) in a figure-eight laser configuration operated in the all-normal-dispersion regime. Different orders of harmonic mode-locking can be obtained from 30 MHz to 12.02 GHz by changing the injection current of the SOA from 80 to 660 mA together with the adjustment of polarization controllers. The highest pulse repetition rate increases almost linearly with the SOA current. As SOA current is set to 660 mA, we obtain the intracavity power of 46 mW at the highest repetition rate of 12.02 GHz, corresponding to the 1202th harmonic of the fundamental mode-locking frequency. To our best knowledge, this is the lowest intracavity power to generate the highest repetition rate with a passively mode-locked laser in the all-normal-dispersion regime.
我们报道了使用在全正色散区工作的八边形激光结构中的 1.06μm 半导体光放大器（SOA）产生被动调谐谐和锁模脉冲。通过改变 SOA 的注入电流从 80mA 到 660mA，同时调整偏振控制器，可以获得从 30MHz 到 12.02GHz 的不同阶次的谐和锁模。最高脉冲重复率几乎随 SOA 电流线性增加。当 SOA 电流设置为 660mA 时，我们在最高重复率 12.02GHz 下获得了 46mW 的腔内功率，对应于基模锁模频率的 1202 次谐波。据我们所知，这是在全正色散区用被动锁模激光器产生最高重复率的最低腔内功率。
