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    Area of Science:

    • Photonics and Optical Engineering
    • Laser Physics
    • Nonlinear Optics

    Background:

    • Supercontinuum generation is crucial for various applications, including spectroscopy and optical communications.
    • Traditional methods often require complex setups or specialized fibers.
    • Developing compact and efficient supercontinuum sources is an ongoing research goal.

    Purpose of the Study:

    • To demonstrate a simple, robust module for octave-spanning continuous-wave (CW) supercontinuum generation.
    • To utilize standard telecom fiber for supercontinuum generation, enhancing accessibility.
    • To achieve high power and broad spectral coverage from a versatile laser system.

    Main Methods:

    • Employing a cascade of Raman shifts to transfer input light into the anomalous dispersion region of telecom fiber.
    • Utilizing a distributed feedback Raman laser architecture for efficient Raman conversions.
    • Integrating a high-power ytterbium-doped fiber laser as the input source.

    Main Results:

    • Achieved octave-spanning supercontinuum generation from 880nm to 1900nm (>1000nm bandwidth).
    • Demonstrated an average output power of approximately 34W.
    • Obtained a high conversion efficiency of 44% for the supercontinuum generation process.
    • Showcased input wavelength agility, generating similar supercontinua across a wide input wavelength range.

    Conclusions:

    • The developed module offers a simple and effective method for generating octave-spanning CW supercontinua.
    • The use of standard telecom fiber and efficient Raman conversion provides a practical and scalable solution.
    • The system's wavelength agility and high performance make it suitable for diverse photonic applications.