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    Passive mode-locking in the cavity of monolithic GaN-based multi-section laser diodes

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    Author
    Weig, Thomas; Schwarz, Ulrich T.; Sulmoni, Luca; Lamy, Jean-Michel; Carlin, Jean-François; Grandjean, Nicolas; Boiko, Dmitri L.
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    Abstract
    We demonstrate picosecond pulse generation in the blue-violet wavelength region by passive intra-cavity mode-locking in GaN-based ridge waveguide laser diodes with monolithically integrated absorbers. For cavity lengths of 1.2 and 0.6 mm we observe repetition frequencies of 40 and 90 GHz, and pulse lengths of 7 and 4 ps, respectively. The results are explained by an extremely short, tunneling dominated carrier life time in the saturable absorber at high negative bias. The fast depletion of the charge carriers in the absorber is investigated by bias-dependent life-time measurements in the absorber.
    Publication Reference
    Novel In-Plane Semiconductor Lasers XII, San Francisco, California (United States), pp. 86400H
    Year
    2013-03-04
    URI
    https://yoda.csem.ch/handle/20.500.12839/790
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