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Nonlinear second-harmonic pulse compression with tilted pulses.

A Dubietis, G Valiulis, G Tamosauskas

    Optics Letters
    |July 15, 1997
    PubMed
    Summary
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    Pulse tilting adjusts group velocities for optimized second-harmonic pulse compression. This method achieved ninefold compression of Nd:glass laser pulses in beta-barium borate crystals.

    Area of Science:

    • Nonlinear optics
    • Quantum optics
    • Laser physics

    Background:

    • Second-harmonic generation (SHG) is crucial for frequency conversion in lasers.
    • Pulse compression enhances peak power but is limited by group velocity mismatch.
    • Optimizing SHG pulse compression requires precise control over interacting pulse dynamics.

    Purpose of the Study:

    • To demonstrate pulse tilting as a method to control group velocities of interacting pulses.
    • To optimize second-harmonic pulse compression across various nonlinear crystals and wavelengths.
    • To experimentally validate the technique using Nd:glass laser pulses.

    Main Methods:

    • Utilizing pulse tilting to modify the group velocities of interacting optical pulses.
    • Employing beta-barium borate (BBO) crystal for second-harmonic generation.

    Related Experiment Videos

  • Experimentally compressing 1.3-picosecond (ps) pulses from an Nd:glass laser.

    • Main Results:

    • Achieved significant pulse compression through controlled group velocity adjustment.
    • Demonstrated ninefold compression of 1.3-ps Nd:glass laser pulses.
    • Validated the effectiveness of pulse tilting for optimizing SHG pulse compression.

    Conclusions:

    • Pulse tilting is an effective technique for managing group velocity mismatch in nonlinear optical processes.
    • The demonstrated method offers a versatile approach for optimizing second-harmonic pulse compression.
    • This advancement has implications for high-power laser systems and nonlinear frequency conversion applications.