Yb:KYW planar waveguide laser Q-switched by evanescent-field interaction with carbon nanotubes

Jun Wan Kim, Sun Young Choi, Dong-Il Yeom, S. Aravazhi, Markus Pollnau, Uwe Griebner, Valentin Petrov, Fabian Rotermund

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    We report Q-switched operation of a planar waveguide laser by evanescent-field interaction with single-walled carbon nanotubes deposited on top of the waveguide. The saturable-absorber-integrated gain medium, which operates based on evanescent-field interaction, enables the realization of a diode-pumped 2.5-cm-long Q-switched Yb:KYW waveguide laser emitting at 1030 nm. With such a compact cavity design, we achieve maximumoutput powers of up to 30 mW, corresponding to a single-pulse energy of 124 nJ, at 241 kHz repetition rate. The shortest pulse duration of 433 ns is generated at a repetition rate of 231 kHz.
    Original languageUndefined
    Pages (from-to)5090-5093
    Number of pages4
    JournalOptics letters
    Issue number23
    Publication statusPublished - Dec 2013


    • EWI-23977
    • IOMS-APD: Active Photonic Devices
    • Laser materials
    • Lasers
    • Waveguides
    • IR-87870
    • diode-pumped
    • Ytterbium
    • Q-switched
    • METIS-300160
    • planar

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