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Related Experiment Videos

Fiber laser using a microsphere resonator as a feedback element.

Khanh Kieu1, Masud Mansuripur

  • 1College of Optical Sciences, The University of Arizona, Tucson, Arizona 85721, USA.

Optics Letters
|January 12, 2007
PubMed
Summary
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Glass microsphere resonators act as narrow-bandwidth, wavelength-selective mirrors for fiber lasers. This enables single-frequency fiber lasers and reveals nonlinear effects like stimulated Raman lasing at low pump powers.

Area of Science:

  • Photonics
  • Laser Physics
  • Optical Engineering

Background:

  • Fiber lasers are crucial for various applications.
  • Achieving single-frequency operation in long fiber lasers is challenging.
  • Microsphere resonators offer unique optical properties.

Purpose of the Study:

  • To demonstrate the use of glass microsphere resonators as wavelength-selective mirrors in fiber lasers.
  • To investigate the feasibility of constructing single-frequency fiber lasers using these resonators.
  • To explore nonlinear optical phenomena in such a laser setup.

Main Methods:

  • Fabrication and characterization of glass microsphere resonators.
  • Integration of microsphere resonators into a fiber laser cavity.

Related Experiment Videos

  • Optical spectral analysis to determine laser frequency and bandwidth.
  • Investigation of nonlinear effects at varying pump powers.

    • Main Results:

    • Microsphere resonators function effectively as wavelength-selective mirrors.
    • High-quality factor (Q ≈ 10^8) leads to a narrow reflection bandwidth.
    • Successful construction of single-frequency fiber lasers with long cavities.
    • Observation of nonlinear effects, including stimulated Raman lasing, at low pump powers.

    Conclusions:

    • Glass microsphere resonators are viable components for advanced fiber laser designs.
    • The narrow bandwidth of microsphere resonators facilitates single-frequency laser operation.
    • The demonstrated setup is promising for exploring nonlinear optics in fiber lasers.