Realization of femtosecond harmonic pulse and high-energy pulse envelope in a self-pulsing fiber laser

IF 2.6 3区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Optical Fiber Technology Pub Date : 2025-02-01 DOI:10.1016/j.yofte.2025.104145

Lingbo Cai , Xiaoran Ma , Jianlei Wang , Xiaohan Chang , Hongyang Dong , Mingqi Fan , Tianli Feng , Chun Wang

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引用次数: 0

Abstract

We report a self-pulsing Er-doped fiber laser (EDFL) which can respectively operate in different dynamic mode-locking regimes, including stable fundamental mode-locking (FML), bunched soliton mode-locking (BSML), harmonic mode-locking (HML) and Q-switched mode-locking (QML). The dynamic evolution of FML pulse to BSML pulse and finally to HML pulse shows a directly dependence on pumping power. At the pumping power of 29 mW, the fiber laser delivers the FML pulses with a repetition frequency of 11.64 MHz and pulse duration of 1.09 ps. The further increase of pumping power makes the FML pulse evolves into the BSML pulses with up to 9 sub-pulses. Once the pumping power reaches 210 mW, the 9th-order HML pulse with a pulse duration of 883 fs is realized. Moreover, the HML pulse can go into the QML regime by adjusting the intracavity polarization state, and the energy of pulse envelope reaches up to 344 nJ at the pumping power of 483 mW. To our best of knowledge, this is the first realization of BSML pulse, femtosecond HML pulse and >300 nJ pulse envelope in a self-pulsing EDFL.

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来源期刊

Optical Fiber Technology 工程技术-电信学

CiteScore

4.80

自引率

11.10%

发文量

327

审稿时长

63 days

期刊介绍： Innovations in optical fiber technology are revolutionizing world communications. Newly developed fiber amplifiers allow for direct transmission of high-speed signals over transcontinental distances without the need for electronic regeneration. Optical fibers find new applications in data processing. The impact of fiber materials, devices, and systems on communications in the coming decades will create an abundance of primary literature and the need for up-to-date reviews. Optical Fiber Technology: Materials, Devices, and Systems is a new cutting-edge journal designed to fill a need in this rapidly evolving field for speedy publication of regular length papers. Both theoretical and experimental papers on fiber materials, devices, and system performance evaluation and measurements are eligible, with emphasis on practical applications.