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Related Experiment Video

Updated: May 16, 2026

Generation and Coherent Control of Pulsed Quantum Frequency Combs
06:42

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

Broadband parametric frequency comb generation with a 1-μm pump source.

Kasturi Saha1, Yoshitomo Okawachi, Jacob S Levy

  • 1School of Applied and Engineering Physics, Cornell University, Ithaca, New York 14853 USA.

Optics Express
|November 29, 2012
PubMed
Summary
This summary is machine-generated.

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Researchers demonstrated broadband frequency comb generation using parametric oscillation in a silicon-nitride ring resonator. This chip-based device, engineered for dispersion, efficiently produces wide-spectrum optical frequency combs.

Area of Science:

  • Photonics
  • Integrated Optics
  • Materials Science

Background:

  • Optical frequency combs are crucial for precision measurement and spectroscopy.
  • Generating broadband combs typically requires complex setups or specific pump wavelengths.
  • Silicon nitride offers excellent optical properties for integrated photonic devices.

Purpose of the Study:

  • To experimentally demonstrate broadband frequency comb generation from a single-frequency pump laser.
  • To showcase the effectiveness of dispersion engineering in silicon nitride ring resonators for comb generation.
  • To explore the potential of chip-based devices for versatile frequency comb sources.

Main Methods:

  • Utilizing parametric oscillation in a high-Q silicon nitride ring resonator.

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Last Updated: May 16, 2026

Generation and Coherent Control of Pulsed Quantum Frequency Combs
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  • Engineering the resonator's dispersion to create a broad anomalous group velocity dispersion region.
  • Employing a single-frequency pump laser at 1-μm wavelength.

    • Main Results:

    • Achieved broadband frequency comb generation spanning 55 THz.
    • Demonstrated efficient parametric four-wave mixing due to engineered dispersion.
    • Obtained a comb with a free spectral range of 230 GHz.

    Conclusions:

    • This work represents the first experimental demonstration of broadband frequency comb generation using this method.
    • Dispersion engineering in chip-based silicon nitride devices is a powerful approach for creating wide-spectrum optical frequency combs.
    • The results highlight the potential for compact and versatile frequency comb sources.