Coherent coupling of multiple transverse modes in a quantum cascade laser
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abstract
We investigate phase coherence of multi-transverse modes in quantum cascade lasers through both near- and far-field mode measurements. We explain the observed phase locking by four-wave mixing of longitudinal modes belonging to different transverse modes. 2008 Optical Society of America.
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2008 Conference on Lasers and Electro-Optics (CLEO)