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Gain-embedded meta mirrors for optically pumped semiconductor disk lasers.

Zhou Yang, David Lidsky, Mansoor Sheik-Bahae

    Optics Express
    |November 6, 2019
    PubMed
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    We developed a novel active mirror using a subwavelength grating and optical gain, designed for efficient heat removal. This structure enables scalable, high-power continuous-wave operation for semiconductor disk lasers.

    Area of Science:

    • Optics and Photonics
    • Materials Science

    Background:

    • Semiconductor disk lasers (SDLs) are crucial for high-power laser applications.
    • Efficient heat management is a key challenge for scaling SDLs to higher continuous-wave (CW) power levels.

    Purpose of the Study:

    • To propose and analyze a novel active mirror structure for power scaling of optically pumped semiconductor disk lasers.
    • To investigate the thermal and optical properties of the proposed structure for efficient heat dissipation.

    Main Methods:

    • Optical wave propagation analysis was performed on the active mirror structure.
    • Thermal transport analysis was conducted to assess heat dissipation capabilities.
    • The structure was designed for direct bonding to thermal substrates like diamond.

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    Main Results:

    • The proposed active mirror integrates a subwavelength grating reflector with optical gain.
    • Direct bonding to thermal substrates ensures efficient heat removal.
    • Analysis indicates suitability for multi-kilowatt CW power operation.

    Conclusions:

    • The active mirror design effectively addresses heat management challenges in semiconductor disk lasers.
    • This approach facilitates significant power scaling for CW laser operation.
    • The structure is well-suited for demanding, high-power laser applications.