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    A novel cavity-resonator-integrated guided-mode resonance mirror (CRIGM) enables stable laser oscillation. This new mirror technology significantly improves wavelength stability, making vertical-cavity lasers suitable for photonic integrated circuits.

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    Area of Science:

    • Photonics
    • Optics
    • Materials Science

    Background:

    • Guided-mode resonance (GMR) devices offer unique optical properties.
    • Vertical-external-cavity surface-emitting lasers (VECSELs) require stable wavelength operation.
    • Integrating optical components onto photonic integrated circuits (PICs) presents fabrication challenges.

    Purpose of the Study:

    • To demonstrate laser oscillation using a novel cavity-resonator-integrated guided-mode resonance mirror (CRIGM).
    • To investigate the wavelength stability of a VECSEL incorporating a CRIGM.
    • To assess the suitability of CRIGM technology for surface-mounting on PICs.

    Main Methods:

    • Fabrication of a CRIGM with narrowband reflection-phase variation.
    • Construction of a vertical-external-short-cavity laser using the CRIGM and a gain mirror.
    • Experimental measurement of oscillation wavelength stability under varying air-gap lengths.

    Main Results:

    • Successful demonstration of laser oscillation in a VECSEL with a CRIGM.
    • Observed stable oscillation wavelength around 1045 nm despite a 0.35 μm variation in air-gap length.
    • Achieved a one-order-of-magnitude reduction in wavelength dependence on air-gap length compared to multilayer mirrors.

    Conclusions:

    • CRIGM technology enables highly wavelength-stable VECSELs.
    • The reduced wavelength sensitivity enhances positioning tolerance for fabrication and operation.
    • This insensitivity makes CRIGM-based VECSELs ideal for surface-mounting on photonic integrated circuits.