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Fiber-integrated 780 nm source for visible parametric generation.

D J J Hu, R T Murray, T Legg

    Optics Express
    |January 22, 2015
    PubMed
    Summary
    This summary is machine-generated.

    We developed a fiber-integrated pulsed laser source producing 3.5 W at 780 nm. This system efficiently generates visible light (668 nm and 662 nm) via four-wave mixing in nonlinear fiber.

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    Area of Science:

    • Photonics and Laser Technology
    • Nonlinear Optics
    • Fiber Optics

    Background:

    • Developing compact, high-power fiber laser sources is crucial for various applications.
    • Efficient generation of visible light from infrared sources remains a significant challenge.

    Purpose of the Study:

    • To report a fully fiber-integrated master oscillator power fiber amplifier (MOPFA) source at 780 nm.
    • To demonstrate efficient visible light generation using this source via nonlinear processes.

    Main Methods:

    • An intensity-modulated 1560 nm laser diode was amplified in an erbium fiber amplifier chain.
    • Frequency doubling was achieved using a periodically poled lithium niobate crystal.
    • Visible light generation was performed through four-wave mixing in highly nonlinear photonic crystal fiber.

    Main Results:

    • A fiber-integrated MOPFA source delivering 3.5 W average power at 780 nm with 410 ps pulses at 50 MHz repetition rate was developed.
    • Visible light generation yielded 105 mW at 668 nm and 95 mW at 662 nm.
    • Pump to anti-Stokes conversion slope efficiencies exceeded 6% for both visible wavelengths.

    Conclusions:

    • The developed fiber-integrated MOPFA source is a viable tool for efficient visible light generation.
    • This approach offers a compact and robust solution for applications requiring specific visible wavelengths.