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Related Experiment Video

Updated: Apr 22, 2026

Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy
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High efficiency single-mode-multimode-single-mode fiber laser with diffraction-limited beam output.

Jiaqi Zhou, Bing He, Yan Feng

    Applied Optics
    |October 17, 2014
    PubMed
    Summary
    This summary is machine-generated.

    A novel Ytterbium-doped fiber laser utilizing a single-mode-multimode-single-mode (SMS) structure achieved high efficiency and excellent beam quality. This design offers high gain and a compact fiber length for laser applications.

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    Area of Science:

    • Optics and Photonics
    • Fiber Laser Technology
    • Laser Engineering

    Background:

    • Ytterbium (Yb)-doped fiber lasers are crucial for various applications due to their efficiency and robustness.
    • Achieving high output power and excellent beam quality simultaneously in fiber lasers remains a key challenge.
    • Single-mode-multimode-single-mode (SMS) structures offer potential for mode control and enhanced performance in fiber devices.

    Purpose of the Study:

    • To design and evaluate an all-fiber, high-efficiency Ytterbium-doped laser operating at 1088 nm.
    • To investigate the impact of a single-mode-multimode-single-mode (SMS) structure on laser performance and beam quality.
    • To demonstrate a compact and efficient fiber laser solution with superior output characteristics.

    Main Methods:

    • Fabrication of an all-fiber laser using a 1.5 m length of large-mode-area Yb-doped gain fiber (20/130 μm core/cladding).
    • Incorporation of a single-mode-multimode-single-mode (SMS) fiber structure for mode management.
    • Utilizing a 976 nm laser diode as the pump source and characterizing the output power and beam quality.

    Main Results:

    • The Yb-doped fiber laser generated a maximum output power of 38.5 W.
    • A high slope efficiency of 70% was achieved.
    • The laser produced a diffraction-limited Gaussian output beam, indicating excellent beam quality, especially with the SMS structure.

    Conclusions:

    • The developed all-fiber laser with an SMS structure demonstrates high efficiency and excellent beam quality at 1088 nm.
    • The SMS structure facilitates high gain and enables a shorter fiber length while maintaining superior beam quality.
    • This laser design presents a promising solution for applications requiring high-power, high-quality laser output.