Chang You Min, Lee Junsu, Lee Ju Han
School of Electrical and Computer Engineering, University of Seoul, Seoul, South Korea.
Opt Express. 2011 Dec 19;19(27):26627-33. doi: 10.1364/OE.19.026627.
We present a new and simple approach for the generation of Q-switched, mode-locked pulses from a laser cavity. The approach is based on cavity loss modulation that employs a subharmonic frequency of the fundamental intermode frequency spacing. A range of experiments have been carried out using an erbium-doped fiber-based ring cavity laser in order to verify that this simple approach can readily produce high quality Q-switched, mode-locked pulses. An active tuning of the Q-switched envelope repetition rate is also shown to be easily achievable by adjusting the order of the applied subharmonic frequency.
我们提出了一种从激光腔中产生调Q锁模脉冲的新颖且简单的方法。该方法基于腔损耗调制，采用了基模间频率间隔的次谐波频率。为了验证这种简单方法能够轻松产生高质量的调Q锁模脉冲，已使用基于掺铒光纤的环形腔激光器进行了一系列实验。通过调整所施加次谐波频率的阶数，还表明可以轻松实现对调Q包络重复率的主动调谐。
