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Related Experiment Video

Updated: Jun 6, 2026

Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy
08:48

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Published on: November 22, 2019

Bessel-beam-pumped tunable distributed-feedback laser.

S Klewitz, F Brinkmann, S Herminghaus

    Applied Optics
    |November 10, 2010
    PubMed
    Summary

    A novel distributed-feedback dye laser utilizes a Bessel beam for precise pumping and mode selection. This design enables tunable laser output by adjusting the pump beam

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    Area of Science:

    • Optics and Photonics
    • Laser Physics

    Background:

    • Distributed-feedback (DFB) lasers offer wavelength selectivity.
    • Bessel beams provide unique focusing properties for optical applications.

    Purpose of the Study:

    • To construct and characterize a DFB dye laser pumped by a standing Bessel beam.
    • To investigate the tunability of the laser output based on Bessel beam properties.

    Main Methods:

    • Fabrication of a DFB dye laser.
    • Pumping the laser medium with a standing Bessel beam.
    • Varying the effective wavelength of the Bessel pump beam to observe changes in laser output.

    Main Results:

    • The Bessel beam precisely pumps a thin filament of the laser medium.
    • Longitudinal-mode selection is achieved through the DFB effect.
    • The output wavelength of the laser is tunable by altering the Bessel pump beam's wavelength, which modifies the DFB's Bragg wavelength.

    Conclusions:

    • A Bessel-beam-pumped DFB dye laser is successfully demonstrated.
    • This configuration allows for efficient pumping and wavelength tunability.
    • The study highlights the potential of Bessel beams in advanced laser design.

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