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Related Experiment Video

Updated: Jun 8, 2026

Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy
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Dye lasers using tapered optical fibers.

G J Pendock, H S Mackenzie, F P Payne

    Applied Optics
    |September 22, 2010
    PubMed
    Summary
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    See all related articles

    Researchers developed a novel dye laser within an optical fiber. This tapered fiber dye laser demonstrates low lasing thresholds and combines fiber advantages with dye tunability.

    Area of Science:

    • Optics and Photonics
    • Laser Technology
    • Materials Science

    Background:

    • Conventional dye lasers offer wide spectral tunability but often require complex setups.
    • Integrating laser gain medium into optical fibers presents challenges in achieving efficient light-matter interaction.
    • Single-mode optical fibers offer excellent light confinement, beneficial for high-intensity applications.

    Purpose of the Study:

    • To investigate a new configuration for dye lasers utilizing a single-mode optical fiber.
    • To achieve low lasing thresholds by enhancing light-dye interaction in a tapered fiber.
    • To demonstrate the feasibility of tapered fiber dye lasers for various applications.

    Main Methods:

    • Fabrication of a tapered section in a single-mode optical fiber.

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  • Coating the tapered fiber waist with a laser dye to provide optical gain.
  • Utilizing the evanescent field of the guided mode for interaction with the dye.
  • Experimental demonstration of grating-tuned, all-fiber ring, and continuous-wave (cw) lasing.

    • Main Results:

    • Achieved low lasing thresholds in the range of 25-65 mW.
    • Demonstrated efficient interaction between guided light and the surrounding laser dye via the evanescent field.
    • Successfully operated three distinct tapered fiber dye laser configurations.

    Conclusions:

    • Tapered fiber dye lasers offer a promising platform combining the benefits of fiber-based lasers with the spectral flexibility of dyes.
    • The evanescent field interaction at the taper waist enables low-threshold and efficient lasing.
    • This technology opens avenues for compact, tunable, fiber-integrated laser sources.