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Watt-level passively mode-locked Er3+-doped ZBLAN fiber laser at 2.8 μm

Pinghua Tang, Zhipeng Qin, Jun Liu, Chujun Zhao, Guoqiang Xie, Shuangchun Wen, and Liejia Qian

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Abstract

We experimentally demonstrated a stable, high-average-power, continuous-wave (CW) passively mode-locked Er3+-doped ZBLAN fiber laser at 2.8 μm based on a semiconductor saturable absorber mirror. A stable mode-locked laser with a signal-to-noise ratio of 52 dB and a slope efficiency of 14% was obtained. The highest average output power in excess of 1 W was generated at the incident pump power of 8.2 W, with a pulse repetition rate of 22.56 MHz and pulse duration of 25 ps. To the best of our knowledge, this is the highest average output power of a CW mode-locked ZBLAN fiber laser in the mid-infrared wavelength regime up to now.

© 2015 Optical Society of America

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Supplementary Material (1)

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Visualization 1: MP4 (9467 KB)      The oscilloscope traces of CW mode-locked pulse trains.

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