Self-synchronized multi-color Q-switched fiber laser using a parallel-integrated fiber Bragg grating

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外文摘要：We demonstrate an intracavity self-synchronized multi-color Q-switched fiber laser using a parallel-integrated fiber Bragg grating[PI-FBG],fabricated by a femtosecond laser with a point-by-point parallel inscription method.The multi-color Q-switched pulses can be always self-synchronized when the group delay differences between neighboring spectra range from-3.4 to 3.4 ps.The starting and evolution dynamics indicate that the saturable absorption effect of the carbon nano-tube plays a dual role:synchronously triggering the startup of the pulse at successive colors by active Q-switching and spontaneously compensating to some extent the temporal walk-off of the multi-color pulses through the cross saturable absorption modulation.This work unveils the intracavity self-synchronization mechanism of the multi-color Q-switched pulses and also demonstrates the potential of PI-FBGs for the customizable generation of the synchronized multi-color pulse in a single cavity.

外文关键词：

synchronized pulse sourcesQ-switched fiber laserssaturable absorption effectfiber Bragg grating

作者：

曾超、杨光伟、李东、雒鹏涛、王若晖、杜岳卿、毛东、赵建林

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作者单位：

Key Laboratory of Light Field Manipulation and Information Acquisition,Ministry of Industry and Information Technology,School of Physical Science and Technology,Northwestern Polytechnical University,Xi'an 710072,China

Research & Development Institute of Northwestern Polytechnical University in Shenzhen,Shenzhen 518063,China

School of Physics,Northwest University,Xi'an 720127,China

出版年：

2024

DOI：

10.3788/COL202422.061402

中国光学快报(英文版)

中国光学学会中国科学院上海光学精密机械研究所

中国光学快报(英文版)

CSTPCD

影响因子：1.305

ISSN：1671-7694

年,卷(期)：2024.22(6)