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Composite cavity semiconductor fiber ring laser.

Z Hu, L Zheng, Y Zhang

    Optics Letters
    |December 8, 2007
    PubMed
    Summary
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    A novel semiconductor fiber ring laser with a passive subring cavity achieved a stable, narrow linewidth spectrum. This design enables unidirectional operation and wavelength tuning for advanced laser applications.

    Area of Science:

    • Optics and Photonics
    • Semiconductor Lasers
    • Fiber Optics

    Background:

    • Semiconductor fiber ring lasers are crucial for various applications.
    • Achieving stable, narrow linewidth, and tunable laser spectra remains a challenge.

    Purpose of the Study:

    • To enhance the spectral stability and performance of a semiconductor fiber ring laser.
    • To introduce a mode-selecting subring cavity for improved laser output.

    Main Methods:

    • Integration of a passive subring cavity as a mode selector into a semiconductor fiber ring laser.
    • Utilizing a piezoelectric transducer for wavelength tuning via voltage application.

    Main Results:

    • A stable lasing spectrum was generated.

    Related Experiment Videos

  • A narrow linewidth of less than 10 kHz was achieved.
  • Unidirectional operation was successfully implemented.
  • A tuning range of 20 nm was obtained by applying 0-30 V dc.

    • Conclusions:

    • The passive subring cavity effectively acts as a mode selector, enhancing laser stability.
    • The developed composite cavity ring laser demonstrates narrow linewidth, unidirectional operation, and tunability.
    • This technology offers potential for advanced spectroscopic and photonic applications.