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    Area of Science:

    • Nonlinear Optics
    • Quantum Optics
    • Laser Physics

    Background:

    • Continuous wave coherent light pumping of nonlinear optical cavities can generate stable optical pulses.
    • Dichromatic pumping typically leads to unstable mode-locked regimes due to competing oscillations.

    Purpose of the Study:

    • To demonstrate the feasibility of generating stable optical pulses in a dichromatically pumped nonlinear optical cavity.
    • To investigate the role of group velocity dispersion optimization in achieving stable pulse generation.

    Main Methods:

    • Utilizing a nonlinear optical cavity pumped by a dichromatic coherent light source.
    • Optimizing the group velocity dispersion (GVD) of the cavity.
    • Matching the group velocity of generated pulses with the beat note of pump harmonics.

    Main Results:

    • Achieved stable generation of optical pulses in a dichromatically pumped cavity.
    • Reduced the power threshold for pulse generation by nearly four times.
    • Observed sub-harmonic locking of generated pulses to dichromatic pump harmonics.

    Conclusions:

    • Optimized group velocity dispersion is crucial for stable pulse generation in dichromatically pumped cavities.
    • The demonstrated method offers a pathway for generating broadband optical frequency combs.
    • This technique is applicable to the creation of optical time crystals.