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Related Experiment Video

Updated: Jul 9, 2026

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

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

Published on: November 22, 2019

Very compact tunable solid-state laser utilizing a thin-film organic semiconductor.

S Riechel, U Lemmer, J Feldmann

    Optics Letters
    |November 28, 2007
    PubMed
    Summary
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    Researchers developed optically pumped organic semiconductor lasers using tris(8-hydroxyquinoline) aluminum (Alq(3)) and a grating. These tunable, low-threshold lasers offer a pathway to inexpensive, visible-range laser sources.

    Area of Science:

    • Organic electronics
    • Laser physics
    • Materials science

    Background:

    • Optically pumped organic lasers offer tunable and potentially low-cost alternatives to traditional lasers.
    • Distributed feedback (DFB) structures are crucial for achieving efficient laser operation in thin-film devices.

    Purpose of the Study:

    • To fabricate and characterize optically pumped organic semiconductor lasers with DFB functionality.
    • To demonstrate wavelength tunability and low-threshold operation in these devices.

    Main Methods:

    • Fabrication of organic semiconductor thin films of tris(8-hydroxyquinoline) aluminum (Alq(3)) doped with laser dye via evaporation.
    • Integration of the organic film onto a polyester substrate with an embossed grating structure for DFB.
    • Optical pumping to achieve laser emission.

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    Last Updated: Jul 9, 2026

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

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

    Published on: November 22, 2019

    Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping
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    Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping

    Published on: June 3, 2015

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    20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier

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    Main Results:

    • Achieved low-threshold, longitudinally monomode DFB laser operation.
    • Demonstrated wavelength tuning over a 44 nm range by varying the organic film thickness.
    • Utilized a compact, all-solid-state pump laser due to the low threshold.

    Conclusions:

    • The developed organic semiconductor laser fabrication method enables tunable, low-threshold DFB laser operation.
    • This approach provides a viable route towards inexpensive, tunable lasers across the visible spectrum.
    • The use of compact pump lasers highlights the practical potential of these organic lasers.