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We report on edge-emitting lasers based on the 1- and 2-D longitudinal photonic bandgap crystal concept. The longitudinal photonic bandgap crystal (PBC) design allows a robust and controllable extension of the fundamental mode over a thick multilayer waveguide to obtain a very large vertical mode spot size and a narrow vertical beam divergence.
Selected Topics in Quantum Electronics, IEEE Journal of (Volume:14 , Issue: 4 )
Date of Publication: July-aug. 2008