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Related Experiment Video

Updated: May 5, 2026

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
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Published on: May 30, 2014

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Waveguide-based optical parametric chirped-pulse oscillator.

Ming Gao, Maximilian Timmerkamp, Carsten Fallnich

    Optics Express
    |May 4, 2026
    PubMed
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    This study demonstrates a flexible waveguide optical parametric chirped-pulse oscillator (OPCPO). It allows tunable output spectral bandwidth for broadband and narrowband laser applications without cavity changes.

    Area of Science:

    • Nonlinear Optics
    • Laser Physics
    • Waveguide Technology

    Background:

    • Optical parametric chirped-pulse oscillators (OPCPOs) are crucial for generating high-energy ultrashort pulses.
    • Controlling the spectral bandwidth of OPCPO output is essential for tailoring pulse characteristics.
    • Existing methods often require complex cavity modifications for bandwidth adjustment.

    Purpose of the Study:

    • To demonstrate a waveguide-based OPCPO with flexible spectral bandwidth control.
    • To enable tunable output bandwidth without altering the oscillator's cavity configuration.
    • To facilitate both broadband and narrowband applications using a single device.

    Main Methods:

    • Synchronous pumping of a waveguide OPCPO using a mode-locked fiber laser.

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  • Utilizing cavity-external grating-based pulse stretchers to vary pump pulse chirp.
  • Implementing flexible spectral bandwidth tuning of the idler output.

    • Main Results:

    • Achieved flexible idler spectral bandwidth tuning from 0.7 to 14.4 nm around 1.12 μm.
    • Maintained bandwidth control across a 22 nm idler wavelength tuning range.
    • Delivered a maximum output idler energy of 337 pJ.

    Conclusions:

    • The demonstrated waveguide OPCPO offers versatile spectral bandwidth control.
    • This flexibility allows tailoring pulse properties for diverse applications.
    • A single OPCPO can now serve both broadband and narrowband laser requirements.