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Microchip dual-frequency laser with well-balanced intensity utilizing temperature control.

Miao Hu, Yu Zhang, Mian Wei

    Optics Express
    |November 10, 2016
    PubMed
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    A new continuous-wave microchip dual-frequency laser (DFL) offers balanced intensity. Precise temperature control matched laser wavelengths to the gain medium

    Area of Science:

    • Optics and Photonics
    • Laser Physics

    Background:

    • Continuous-wave microchip lasers are crucial for various applications.
    • Achieving dual-frequency output with balanced intensity presents a significant challenge.

    Purpose of the Study:

    • To develop a continuous-wave microchip dual-frequency laser (DFL) with well-balanced intensity.
    • To precisely tune DFL wavelengths for optimal spectral matching with the gain medium.

    Main Methods:

    • Utilized a temperature controller for precise wavelength tuning of the DFL.
    • Spectrally matched the dual-frequency laser output with the emission cross section (ECS) spectrum of the gain medium.

    Main Results:

    • Achieved a 264 mW DFL signal at a heat sink temperature of -5.6°C.

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  • Obtained a frequency separation of 67.52 GHz.
  • Reached an intensity balance ratio (IBR) of 0.991, indicating excellent intensity balance.

    • Conclusions:

    • Demonstrated a method for achieving high-intensity balance in microchip DFLs.
    • The precise temperature control is key to optimizing DFL performance.
    • The developed DFL shows potential for applications requiring stable, balanced dual-frequency outputs.