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Related Experiment Video

Updated: Jun 22, 2026

Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy
08:48

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

Published on: November 22, 2019

Efficient narrow-linewidth volume-Bragg grating-locked Nd:fiber laser.

Pär Jelger, Fredrik Laurell

    Optics Express
    |June 24, 2009
    PubMed
    Summary
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    A novel fiber laser setup using a neodymium-doped large mode area fiber and a volume Bragg grating achieved high efficiency and a drastically narrowed linewidth. This configuration offers a stable, high-performance alternative to conventional fiber laser systems.

    Area of Science:

    • Fiber optics
    • Laser physics
    • Photonics

    Background:

    • Microstructured large mode area fibers offer potential for high-power laser applications.
    • Controlling laser output characteristics like linewidth and stability is crucial for many scientific and industrial uses.
    • Volume Bragg gratings provide a method for wavelength selectivity and frequency stabilization.

    Purpose of the Study:

    • To investigate the performance of a neodymium-doped microstructured large mode area fiber laser.
    • To compare a frequency-locked configuration using a volume Bragg grating with a conventional fiber laser setup.
    • To evaluate the efficiency, output stability, and linewidth of the proposed laser system.

    Main Methods:

    • Fabrication and characterization of a neodymium-doped microstructured large mode area fiber.

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    Last Updated: Jun 22, 2026

    Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy
    08:48

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

    Published on: November 22, 2019

    20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
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  • Implementation of a frequency-locking mechanism using a volume Bragg grating.
  • Comparative analysis of the developed fiber laser with a conventional fiber laser system under identical operating conditions.

    • Main Results:

    • Achieved a high slope efficiency of 51% for the developed fiber laser.
    • Demonstrated a stable laser output, indicating robustness of the configuration.
    • Drastically narrowed the laser linewidth to less than 0.07 nm, signifying improved spectral purity.

    Conclusions:

    • The frequency-locked fiber laser configuration utilizing a volume Bragg grating offers superior performance compared to conventional setups.
    • The enhanced spectral characteristics and high efficiency make this system suitable for demanding applications.
    • Further research could explore scaling this configuration for even higher power levels and broader wavelength tuning.