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Updated: Feb 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-contrast 10  fs OPCPA-based front end for multi-PW laser chains.

D N Papadopoulos, P Ramirez, K Genevrier

    Optics Letters
    |September 16, 2017
    PubMed
    Summary
    This summary is machine-generated.

    Achieving high-power lasers requires excellent pulse quality and contrast. This study presents a front-end design for a 10 femtosecond (fs) laser system, improving contrast for multi-petawatt (PW) applications.

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    Area of Science:

    • Laser Physics
    • High-Intensity Lasers
    • Ultrafast Optics

    Background:

    • Multi-petawatt (PW) laser applications demand high temporal pulse quality and contrast ratio (CR).
    • Achieving multi-PW peak power requires ultrashort pulses with excellent spectral phase quality.
    • A nanosecond contrast exceeding 1012 is essential to prevent deleterious pre-ionization effects on targets.

    Purpose of the Study:

    • To present a high-contrast 10 femtosecond (fs) front-end design study.
    • To enable the injection of highly energetic Ti:sapphire PW lasers within the Apollon 10 PW French laser program.

    Main Methods:

    • Design study of a 10 fs laser front-end.
    • Measurement and analysis of contrast ratio (CR) across different timescales.
    • Identification of major contributions to CR at various scales.

    Main Results:

    • A high-contrast 10 fs front-end design was developed.
    • CR was measured and analyzed, detailing contributions at different time ranges.
    • The design addresses critical requirements for multi-PW laser systems.

    Conclusions:

    • The presented front-end design is crucial for advancing multi-PW laser capabilities.
    • Understanding CR contributions is key to optimizing laser performance.
    • This work supports the development of next-generation high-energy laser systems.