Abstract

In this Letter, a high-quality black phosphorus saturable absorber (BP-SA) with a multilayer structure was prepared, and its corresponding characteristics were investigated. Based on the BP-SA and an electro-optic modulator (EOM), a dual-loss-modulated mode-locked laser with a controllable repetition rate and high peak power was realized, which has the repetition rate of EOM and the mode-locking pulse width in the $Q$-switching and mode-locking laser. The output performances versus the pump power were measured. The maximum pulse peak power of 3.89 MW was obtained with the minimum pulse duration of 119 ps. To the best of our knowledge, this is the highest pulse peak power with BP-SA reported.

© 2017 Optical Society of America

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