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Related Experiment Video

Updated: Jun 20, 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

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The soliton laser.

L F Mollenauer, R H Stolen

    Optics Letters
    |September 1, 2009
    PubMed
    Summary
    This summary is machine-generated.

    Researchers developed a soliton laser by adding fiber to a mode-locked laser. Pulse width is controlled by fiber length, paving the way for ultrashort pulse generation.

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    Area of Science:

    • Optics and Photonics
    • Laser Physics
    • Fiber Optics

    Background:

    • Mode-locked lasers are crucial for generating ultrashort optical pulses.
    • Fiber incorporation in laser cavities can modify pulse characteristics.
    • Soliton phenomena in optical fibers offer unique pulse shaping capabilities.

    Purpose of the Study:

    • To develop a novel laser device by integrating a polarization-preserving fiber into a mode-locked color-center laser.
    • To investigate the influence of fiber length on the generated pulse width.
    • To explore the potential for producing ultrashort optical pulses using this soliton laser design.

    Main Methods:

    • A length of single-mode, polarization-preserving fiber was incorporated into the feedback loop of a mode-locked color-center laser operating at wavelengths of 1.4-1.6 micrometers.

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  • The relationship between fiber length and output pulse width was analyzed.
  • Theoretical predictions for soliton behavior (N=2) were used to guide experimental observations.

    • Main Results:

    • A device termed the 'soliton laser' was successfully created.
    • Pulse widths ranging from 2.0 picoseconds (psec) down to 0.21 psec were achieved.
    • The pulse width was found to be directly determined by the incorporated fiber length, consistent with N=2 soliton dynamics.

    Conclusions:

    • The integration of polarization-preserving fiber into a mode-locked laser cavity is an effective method for controlling ultrashort pulse durations.
    • The developed soliton laser demonstrates the potential for generating sub-picosecond pulses.
    • Further pulse compression in an external fiber is predicted to yield pulses narrower than 50 femtoseconds (fsec).