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    Opt Express. 2008 Apr 28;16(9):6609-18.

    Strong optical injection-locked semiconductor lasers demonstrating > 100-GHz resonance frequencies and 80-GHz intrinsic bandwidths.

    Lau EK, Zhao X, Sung HK, Parekh D, Chang-Hasnain C, Wu MC.

    Source

    Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, Berkeley, California 94720, USA. elau@eecs.berkeley.edu

    Abstract

    By using strong optical injection locking, we report resonance frequency enhancement in excess of 100 GHz in semiconductor lasers. We demonstrate this enhancement in both distributed feedback (DFB) lasers and vertical-cavity surface-emitting lasers (VCSELs), showing the broad applicability of the technique and that the coupling Q is the figure-of-merit for resonance frequency enhancement. We have also identified the key factors that cause low-frequency roll-off in injection-locked lasers. By increasing the slave laser's DC current bias, we have achieved a record intrinsic 3-dB bandwidth of 80 GHz in VCSELs.

    PMID:
    18545364
    [PubMed - indexed for MEDLINE]

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