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Generation and Coherent Control of Pulsed Quantum Frequency Combs
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Simple approach to high-fidelity tunable narrow-band pulse generation.

Charles W Ballmann, Georgi I Petrov, Vladislav V Yakovlev

    Optics Letters
    |January 7, 2017
    PubMed
    Summary

    We present a simple method to eliminate residual continuous wave (CW) pedestals in optical parametric amplification. This technique improves the accuracy of optical measurements by removing unwanted CW seed light.

    Area of Science:

    • Optics and Photonics
    • Quantum Optics
    • Atomic Physics

    Background:

    • Seeded optical parametric amplification generates tunable narrow-band short-pulse coherent emission.
    • Residual continuous wave (CW) pedestals in amplified pulses can compromise experimental accuracy and data interpretation.

    Purpose of the Study:

    • To demonstrate a straightforward method for eliminating residual CW seed light in a seeded parametric amplification setup.
    • To enhance the precision of optical measurements by removing CW pedestals.

    Main Methods:

    • Utilizing a frequency-tunable, seeded parametric amplification setup operating in the nanosecond regime.
    • Implementing an additional parametric amplification stage seeded by the idler wave from the first stage to suppress the CW pedestal.

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    Main Results:

    • Successfully eliminated the residual CW seed in the parametric amplification process.
    • Validated the method using a pump-probe experiment in atomic vapor.
    • Observed the elimination of an atomic vapor hyperfine pumping signal, confirming the removal of the CW pedestal.

    Conclusions:

    • The proposed method effectively removes residual CW pedestals in seeded parametric amplification.
    • This technique is crucial for accurate optical measurements and data analysis in experiments involving pulsed coherent light sources.
    • The successful application in atomic vapor experiments highlights its practical utility.