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20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
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Combined Yb/Nd driver for optical parametric chirped pulse amplifiers.

Kirilas Michailovas, Andrius Baltuska, Audrius Pugzlys

    Optics Express
    |September 24, 2016
    PubMed
    Summary

    A new front-end/pump system synchronizes femtosecond Yb and picosecond Nd laser amplifiers for optical parametric chirped pulse amplifiers, achieving high pulse energies up to 62 mJ.

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    Area of Science:

    • Laser Physics
    • Nonlinear Optics
    • Ultrafast Science

    Background:

    • Optical parametric chirped pulse amplification (OPCPA) requires synchronized seed and pump lasers.
    • Developing integrated front-end systems is crucial for optimizing OPCPA performance.

    Purpose of the Study:

    • To develop and characterize a novel front-end/pump system for OPCPA.
    • To achieve all-optical synchronization between femtosecond and picosecond laser amplifiers.

    Main Methods:

    • Utilized a dual-output fiber oscillator/power amplifier.
    • Employed Ytterbium (Yb) and Neodymium (Nd) laser amplifiers operating at 1030 nm and 1064 nm.
    • Integrated Nd:YVO and Nd:YAG based amplification stages.

    Main Results:

    • Achieved <120 fs pulse duration from the 1030 nm oscillator (0.45 nJ).
    • Generated 9 mJ pulses (16 ps duration) from Nd:YVO amplifier.
    • Produced 62 mJ pulses (20 ps duration) at 1 kHz repetition rate from Nd:YAG amplifier.

    Conclusions:

    • The developed system successfully synchronizes different laser types for OPCPA.
    • Current energy scaling is limited by diffraction grating dimensions, a temporary constraint.
    • The system provides a robust platform for high-energy ultrafast laser generation.