Optimization of erbium-doped actively Q-switched fiber laser implemented in symmetric configuration

Stanislav A. Kolpakov, Sergey Sergeyev, Chengbo Mou, Neil T. Gordon, Kaiming Zhou

Research output: Contribution to journalArticlepeer-review


We report the results of an experimental study aimed at improving the performance of actively Q-switched fiber lasers. Unlike generic design schemes employing photonic crystal fibers, largemodal diameter fibers or double-clad fibers, we demonstrate a high-power, actively Q-switched laser based on standard com- munication erbium doped fibers with peak irradiance beyond the state-of-the-art at 3.1 GW/cm2 . The laser had 2.2 kW peak power, 15.5 ns pulse duration and 36.8 µJ pulse energy. We have also investigated the dynamics of pulse generation and have success- fully suppressed pulse instabilities caused by backscattered laser emission reaching the pump laser diodes.
Original languageEnglish
Number of pages8
JournalIEEE Journal of Selected Topics in Quantum Electronics
Issue number5
Early online date16 Jan 2014
Publication statusPublished - Sept 2014

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  • active Q-switching
  • erbium-doped fiber laser
  • fiber lasers
  • giant pulse


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