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Related Experiment Video

Updated: Dec 14, 2025

Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy
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Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy

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High power microsecond fiber laser at 1.5 μm.

Svitlana Pavlova, M Emre Yagci, S Koray Eken

    Optics Express
    |July 19, 2020
    PubMed
    Summary

    This study presents a high-power fiber laser system generating controllable microsecond pulses. A novel dual-seed method enhances pulse quality and stability for versatile applications.

    Area of Science:

    • Laser Physics and Photonics
    • Optical Engineering

    Background:

    • High-power fiber lasers are crucial for various scientific and industrial applications.
    • Controlling pulse shape and minimizing amplified spontaneous emission (ASE) are key challenges in laser system design.

    Purpose of the Study:

    • To demonstrate a single-frequency, high-power fiber laser system capable of generating controllable rectangular-shaped microsecond (μs) pulses.
    • To introduce a novel method for controlling ASE and mitigating pulse steepening during amplification.

    Main Methods:

    • Utilized a fiber laser system operating at 1550 nm.
    • Employed a new method incorporating two seed sources at 1550 nm and 1560 nm to manage ASE and pulse shape.
    • Implemented an electronically configurable design for on-the-fly adjustments of repetition rate and pulse duration.

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    Related Experiment Videos

    Last Updated: Dec 14, 2025

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    Main Results:

    • Achieved an output power of approximately 35 W in continuous wave (CW) mode and a peak power of around 32 W in pulsed mode.
    • Demonstrated tunable repetition rates from 50 Hz to 10 kHz and adjustable pulse durations from 10 μs to 100 μs.
    • Confirmed excellent long and short-term stability, along with superior spectral and spatial beam quality.

    Conclusions:

    • The developed fiber laser system successfully generates high-power, controllable rectangular μs pulses.
    • The dual-seed source method effectively addresses ASE and pulse steepening issues.
    • The system's tunable parameters and stability make it a promising tool for diverse applications requiring precise optical pulse generation.